diff --git a/Cargo.toml b/Cargo.toml
index ecc3558..a46bdcc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -53,7 +53,7 @@ zstd = { version = "0.13", optional = true }
 default = ["all-fmt", "image-jpg", "image-jxl", "image-webp", "audio-flac", "jieba"]
 all-fmt = ["all-script", "all-img", "all-arc", "all-audio"]
 all-script = ["artemis", "artemis-panmimisoft", "bgi", "cat-system", "circus", "entis-gls", "escude", "ex-hibit", "favorite", "hexen-haus", "kirikiri", "silky", "softpal", "will-plus", "yaneurao", "yaneurao-itufuru"]
-all-img = ["bgi-img", "cat-system-img", "circus-img", "emote-img", "hexen-haus-img", "kirikiri-img", "softpal-img"]
+all-img = ["bgi-img", "cat-system-img", "circus-img", "emote-img", "hexen-haus-img", "kirikiri-img", "softpal-img", "will-plus-img"]
 all-arc = ["artemis-arc", "bgi-arc", "cat-system-arc", "circus-arc", "escude-arc", "ex-hibit-arc", "hexen-haus-arc", "softpal-arc"]
 all-audio = ["bgi-audio", "circus-audio"]
 artemis = ["stylua", "utils-escape"]
@@ -87,6 +87,7 @@ softpal = ["int-enum"]
 softpal-arc = ["softpal"]
 softpal-img = ["softpal", "image"]
 will-plus = ["utils-str"]
+will-plus-img = ["will-plus", "image"]
 yaneurao = []
 yaneurao-itufuru = ["yaneurao"]
 # basic feature
diff --git a/README.md b/README.md
index dd623f3..a60d1b1 100644
--- a/README.md
+++ b/README.md
@@ -212,6 +212,10 @@ msg-tool create -t <script-type> <input> <output>
 | Script Type | Feature Name | Name | Export | Import | Export Multiple | Import Multiple | Custom Export | Custom Import | Create | Remarks |
 |---|---|---|---|---|---|---|---|---|---|---|
 | `will-plus-ws2`/`adv-hd-ws2` | `will-plus` | WillPlus/AdvHD Script File (.ws2) | ✔️ | ✔️ | ❌ | ❌ | ❌ | ❌ | ❌ | |
+
+| Image Type | Feature Name | Name | Export | Import | Export Multiple | Import Multiple | Create | Remarks |
+|---|---|---|---|---|---|---|---|---|
+| `will-plus-wip`/`adv-hd-wip` | `will-plus-img` | WillPlus/AdvHD WIP Image File (.wip) | ✔️ | ❌ | ✔️ | ❌ | ❌ |  |
 ### Yaneurao Itufuru
 | Script Type | Feature Name | Name | Export | Import | Export Multiple | Import Multiple | Custom Export | Custom Import | Create | Remarks |
 |---|---|---|---|---|---|---|---|---|---|---|
diff --git a/src/scripts/mod.rs b/src/scripts/mod.rs
index fdb509f..2cf45f4 100644
--- a/src/scripts/mod.rs
+++ b/src/scripts/mod.rs
@@ -150,6 +150,8 @@ lazy_static::lazy_static! {
         Box::new(hexen_haus::img::png::PngImageBuilder::new()),
         #[cfg(feature = "hexen-haus-arc")]
         Box::new(hexen_haus::archive::odio::HexenHausOdioArchiveBuilder::new()),
+        #[cfg(feature = "will-plus-img")]
+        Box::new(will_plus::img::wip::WillPlusWipImageBuilder::new()),
     ];
     /// A list of all script extensions.
     pub static ref ALL_EXTS: Vec<String> =
diff --git a/src/scripts/will_plus/img/mod.rs b/src/scripts/will_plus/img/mod.rs
new file mode 100644
index 0000000..72e2bf5
--- /dev/null
+++ b/src/scripts/will_plus/img/mod.rs
@@ -0,0 +1 @@
+pub mod wip;
diff --git a/src/scripts/will_plus/img/wip.rs b/src/scripts/will_plus/img/wip.rs
new file mode 100644
index 0000000..1b0712a
--- /dev/null
+++ b/src/scripts/will_plus/img/wip.rs
@@ -0,0 +1,380 @@
+use crate::ext::io::*;
+use crate::scripts::base::*;
+use crate::types::*;
+use crate::utils::img::*;
+use crate::utils::struct_pack::*;
+use anyhow::{Context, Result, anyhow};
+use msg_tool_macro::*;
+use std::convert::TryFrom;
+use std::io::{Read, Seek, SeekFrom, Write};
+use std::ops::Range;
+
+#[derive(Debug)]
+/// Builder for WillPlus WIP images.
+pub struct WillPlusWipImageBuilder {}
+
+impl WillPlusWipImageBuilder {
+    /// Creates a new `WillPlusWipImageBuilder` instance.
+    pub const fn new() -> Self {
+        Self {}
+    }
+}
+
+impl ScriptBuilder for WillPlusWipImageBuilder {
+    fn default_encoding(&self) -> Encoding {
+        Encoding::Cp932
+    }
+
+    fn build_script(
+        &self,
+        data: Vec<u8>,
+        _filename: &str,
+        _encoding: Encoding,
+        _archive_encoding: Encoding,
+        config: &ExtraConfig,
+        _archive: Option<&Box<dyn Script>>,
+    ) -> Result<Box<dyn Script>> {
+        Ok(Box::new(WillPlusWipImage::new(
+            MemReader::new(data),
+            config,
+        )?))
+    }
+
+    fn extensions(&self) -> &'static [&'static str] {
+        &["wip", "wi0", "msk", "mos"]
+    }
+
+    fn script_type(&self) -> &'static ScriptType {
+        &ScriptType::WillPlusWip
+    }
+
+    fn is_this_format(&self, _filename: &str, buf: &[u8], buf_len: usize) -> Option<u8> {
+        if buf_len >= 4 && buf.starts_with(b"WIPF") {
+            Some(10)
+        } else {
+            None
+        }
+    }
+
+    #[cfg(feature = "image")]
+    fn is_image(&self) -> bool {
+        true
+    }
+}
+
+#[derive(Debug, Clone, StructPack, StructUnpack)]
+struct FrameHeader {
+    width: u32,
+    height: u32,
+    offset_x: u32,
+    offset_y: u32,
+    _reserved: i32,
+    frame_size: u32,
+}
+
+#[derive(Debug, Clone)]
+struct WillPlusWipFrame {
+    index: usize,
+    header: FrameHeader,
+    data_range: Range<usize>,
+    palette_range: Option<Range<usize>>,
+}
+
+#[derive(Debug)]
+/// WillPlus WIP image reader.
+pub struct WillPlusWipImage {
+    data: MemReader,
+    frames: Vec<WillPlusWipFrame>,
+    bpp: u16,
+}
+
+impl WillPlusWipImage {
+    /// Creates a `WillPlusWipImage` from raw data.
+    pub fn new(mut data: MemReader, _config: &ExtraConfig) -> Result<Self> {
+        if data.data.len() < 8 {
+            return Err(anyhow!("WIP image too small"));
+        }
+        let mut header = [0u8; 4];
+        data.read_exact(&mut header)?;
+        if &header != b"WIPF" {
+            return Err(anyhow!("Invalid WIP image header"));
+        }
+
+        let frame_count = data.read_u16()? as usize;
+        if frame_count == 0 {
+            return Err(anyhow!("WIP image has no frames"));
+        }
+        let bpp = data.read_u16()?;
+        if bpp != 8 && bpp != 24 {
+            return Err(anyhow!("Unsupported WIP bits-per-pixel: {}", bpp));
+        }
+
+        let index_size = frame_count
+            .checked_mul(0x18)
+            .ok_or_else(|| anyhow!("Frame table size overflow"))?;
+        let mut data_offset = 8usize
+            .checked_add(index_size)
+            .ok_or_else(|| anyhow!("Frame data offset overflow"))?;
+        if data.data.len() < data_offset {
+            return Err(anyhow!("WIP image truncated before frame data"));
+        }
+
+        let mut frames = Vec::with_capacity(frame_count);
+        for frame_index in 0..frame_count {
+            let header_offset = 8 + frame_index * 0x18;
+            data.seek(SeekFrom::Start(header_offset as u64))?;
+            let header = FrameHeader::unpack(&mut data, false, Encoding::Utf8)
+                .with_context(|| format!("Failed to read header for frame {}", frame_index))?;
+            let frame_size = usize::try_from(header.frame_size)
+                .map_err(|_| anyhow!("Frame {} data size too large", frame_index))?;
+
+            let data_start = data_offset;
+            let data_end = data_start
+                .checked_add(frame_size)
+                .ok_or_else(|| anyhow!("Frame {} data range overflow", frame_index))?;
+            if data_end > data.data.len() {
+                return Err(anyhow!("Frame {} data exceeds file length", frame_index));
+            }
+
+            let (palette_range, next_offset) = if bpp == 8 {
+                let palette_start = data_end;
+                let palette_end = palette_start
+                    .checked_add(0x400)
+                    .ok_or_else(|| anyhow!("Frame {} palette range overflow", frame_index))?;
+                if palette_end > data.data.len() {
+                    return Err(anyhow!("Frame {} palette exceeds file length", frame_index));
+                }
+                (Some(palette_start..palette_end), palette_end)
+            } else {
+                (None, data_end)
+            };
+
+            frames.push(WillPlusWipFrame {
+                index: frame_index,
+                header,
+                data_range: data_start..data_end,
+                palette_range,
+            });
+            data_offset = next_offset;
+        }
+
+        if frames.is_empty() {
+            return Err(anyhow!("No valid frames found in WIP image"));
+        }
+
+        Ok(WillPlusWipImage { data, frames, bpp })
+    }
+
+    fn decode_frame(&self, frame: &WillPlusWipFrame) -> Result<ImageData> {
+        let width_usize = usize::try_from(frame.header.width)
+            .map_err(|_| anyhow!("Frame {} width is too large", frame.index))?;
+        let height_usize = usize::try_from(frame.header.height)
+            .map_err(|_| anyhow!("Frame {} height is too large", frame.index))?;
+        let plane_size = width_usize
+            .checked_mul(height_usize)
+            .ok_or_else(|| anyhow!("Frame {} dimensions overflow", frame.index))?;
+
+        let compressed = self
+            .data
+            .data
+            .get(frame.data_range.clone())
+            .ok_or_else(|| anyhow!("Frame {} data range is invalid", frame.index))?;
+
+        let expected = match self.bpp {
+            8 => plane_size,
+            24 => plane_size
+                .checked_mul(3)
+                .ok_or_else(|| anyhow!("Frame {} buffer size overflow for 24bpp", frame.index))?,
+            _ => return Err(anyhow!("Unsupported bits-per-pixel: {}", self.bpp)),
+        };
+
+        let decoded = lzss_decompress(compressed, expected)
+            .with_context(|| format!("Failed to decompress frame {}", frame.index))?;
+
+        match self.bpp {
+            24 => {
+                let required = plane_size
+                    .checked_mul(3)
+                    .ok_or_else(|| anyhow!("Frame {} plane size overflow", frame.index))?;
+                if decoded.len() < required {
+                    return Err(anyhow!(
+                        "Frame {} decompressed data too short: {} < {}",
+                        frame.index,
+                        decoded.len(),
+                        required
+                    ));
+                }
+                let mut pixels = Vec::with_capacity(required);
+                for i in 0..plane_size {
+                    let b = decoded[i];
+                    let g = decoded[i + plane_size];
+                    let r = decoded[i + plane_size * 2];
+                    pixels.push(b);
+                    pixels.push(g);
+                    pixels.push(r);
+                }
+                Ok(ImageData {
+                    width: frame.header.width,
+                    height: frame.header.height,
+                    color_type: ImageColorType::Bgr,
+                    depth: 8,
+                    data: pixels,
+                })
+            }
+            8 => {
+                let indices = decoded.get(0..plane_size).ok_or_else(|| {
+                    anyhow!(
+                        "Frame {} decompressed data too short for indices",
+                        frame.index
+                    )
+                })?;
+                let palette_range = frame.palette_range.as_ref().ok_or_else(|| {
+                    anyhow!("Frame {} missing palette data for 8bpp image", frame.index)
+                })?;
+                let palette = self
+                    .data
+                    .data
+                    .get(palette_range.clone())
+                    .ok_or_else(|| anyhow!("Frame {} palette range is invalid", frame.index))?;
+                convert_index_palette_to_normal_bitmap(
+                    indices,
+                    8,
+                    palette,
+                    PaletteFormat::RgbX,
+                    width_usize,
+                    height_usize,
+                )
+                .with_context(|| format!("Failed to apply palette for frame {}", frame.index))
+            }
+            _ => Err(anyhow!("Unsupported bits-per-pixel: {}", self.bpp)),
+        }
+    }
+}
+
+impl Script for WillPlusWipImage {
+    fn default_output_script_type(&self) -> OutputScriptType {
+        OutputScriptType::Json
+    }
+
+    fn default_format_type(&self) -> FormatOptions {
+        FormatOptions::None
+    }
+
+    fn is_image(&self) -> bool {
+        true
+    }
+
+    fn export_image(&self) -> Result<ImageData> {
+        if self.frames.len() > 1 {
+            eprintln!("WARN: WIP image contains multiple frames, exporting only the first frame");
+            crate::COUNTER.inc_warning();
+        }
+        self.frames
+            .get(0)
+            .ok_or_else(|| anyhow!("No frames available in WIP image"))
+            .and_then(|frame| self.decode_frame(frame))
+    }
+
+    fn is_multi_image(&self) -> bool {
+        self.frames.len() > 1
+    }
+
+    fn export_multi_image<'a>(
+        &'a self,
+    ) -> Result<Box<dyn Iterator<Item = Result<ImageDataWithName>> + 'a>> {
+        Ok(Box::new(WillPlusWipIterator {
+            image: self,
+            index: 0,
+        }))
+    }
+}
+
+struct WillPlusWipIterator<'a> {
+    image: &'a WillPlusWipImage,
+    index: usize,
+}
+
+impl<'a> Iterator for WillPlusWipIterator<'a> {
+    type Item = Result<ImageDataWithName>;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        if let Some(frame) = self.image.frames.get(self.index) {
+            let frame_index = self.index;
+            self.index += 1;
+            Some(
+                self.image
+                    .decode_frame(frame)
+                    .map(|data| ImageDataWithName {
+                        name: format!("{:04}", frame_index),
+                        data,
+                    }),
+            )
+        } else {
+            None
+        }
+    }
+}
+
+fn lzss_decompress(compressed: &[u8], expected: usize) -> Result<Vec<u8>> {
+    let mut output = Vec::with_capacity(expected.max(0x1000));
+    let mut window = [0u8; 0x1000];
+    let mut window_index: usize = 1;
+    let mut control: u32 = 0;
+    let mut remaining = compressed.len();
+    let mut cursor = 0usize;
+
+    while remaining > 0 {
+        control >>= 1;
+        if control & 0x100 == 0 {
+            if remaining == 0 {
+                break;
+            }
+            let value = compressed[cursor];
+            cursor += 1;
+            remaining -= 1;
+            control = (value as u32) | 0xFF00;
+        }
+
+        if control & 1 != 0 {
+            if remaining < 1 {
+                return Err(anyhow!("Unexpected end of data while reading literal"));
+            }
+            let value = compressed[cursor];
+            cursor += 1;
+            remaining -= 1;
+            output.push(value);
+            window[window_index] = value;
+            window_index = (window_index + 1) & 0x0FFF;
+        } else {
+            if remaining < 2 {
+                return Err(anyhow!(
+                    "Unexpected end of data while reading back-reference"
+                ));
+            }
+            let hi = compressed[cursor] as usize;
+            let lo = compressed[cursor + 1] as usize;
+            cursor += 2;
+            remaining -= 2;
+            let mut offset = (hi << 4) | (lo >> 4);
+            let mut count = (lo & 0x0F) + 2;
+            while count > 0 {
+                let value = window[offset & 0x0FFF];
+                offset = offset.wrapping_add(1);
+                output.push(value);
+                window[window_index] = value;
+                window_index = (window_index + 1) & 0x0FFF;
+                count -= 1;
+            }
+        }
+    }
+
+    if expected > 0 && output.len() < expected {
+        return Err(anyhow!(
+            "Decompressed data shorter than expected: {} < {}",
+            output.len(),
+            expected
+        ));
+    }
+
+    Ok(output)
+}
diff --git a/src/scripts/will_plus/mod.rs b/src/scripts/will_plus/mod.rs
index f6dbea1..51441cc 100644
--- a/src/scripts/will_plus/mod.rs
+++ b/src/scripts/will_plus/mod.rs
@@ -1,3 +1,5 @@
 //! WillPlus Scripts
+#[cfg(feature = "will-plus-img")]
+pub mod img;
 pub mod ws2;
 mod ws2_disasm;
diff --git a/src/types.rs b/src/types.rs
index 5edea77..d1a77f2 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -666,6 +666,10 @@ pub enum ScriptType {
     #[value(alias("adv-hd-ws2"))]
     /// WillPlus ws2 script
     WillPlusWs2,
+    #[cfg(feature = "will-plus")]
+    #[value(alias("adv-hd-wip"))]
+    /// WillPlus WIP Image
+    WillPlusWip,
     #[cfg(feature = "yaneurao-itufuru")]
     #[value(alias("itufuru"))]
     /// Yaneurao Itufuru script