diff --git a/Cargo.lock b/Cargo.lock
index 37e3b75..5df9e40 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1366,6 +1366,7 @@ dependencies = [
  "webp",
  "windows-sys 0.61.2",
  "xml5ever",
+ "xp3",
  "zstd",
 ]
 
@@ -2534,6 +2535,18 @@ dependencies = [
  "markup5ever",
 ]
 
+[[package]]
+name = "xp3"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61c728da4ef7d98958a2d42fd957e82dd96723ec9c6255ccb3e743142d556ab6"
+dependencies = [
+ "adler32",
+ "byteorder",
+ "encoding",
+ "flate2",
+]
+
 [[package]]
 name = "yoke"
 version = "0.8.0"
diff --git a/Cargo.toml b/Cargo.toml
index 288300e..efefdec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,6 +47,7 @@ url = { version = "2.5", optional = true }
 utf16string = "0.2"
 webp = { version = "0.3", default-features = false, optional = true }
 xml5ever = { version = "0.35", optional = true }
+xp3 = { version = "0.3", optional = true}
 zstd = { version = "0.13", optional = true }
 
 [features]
@@ -54,7 +55,7 @@ default = ["all-fmt", "image-jpg", "image-jxl", "image-webp", "audio-flac", "jie
 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", "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-arc = ["artemis-arc", "bgi-arc", "cat-system-arc", "circus-arc", "escude-arc", "ex-hibit-arc", "hexen-haus-arc", "kirikiri-arc", "softpal-arc"]
 all-audio = ["bgi-audio", "circus-audio"]
 artemis = ["stylua", "utils-escape"]
 artemis-panmimisoft = ["artemis", "rust-ini"]
@@ -81,6 +82,7 @@ hexen-haus = ["memchr", "utils-str"]
 hexen-haus-arc = ["hexen-haus"]
 hexen-haus-img = ["hexen-haus", "image"]
 kirikiri = ["emote-psb", "fancy-regex", "flate2", "json", "lz4", "utils-escape"]
+kirikiri-arc = ["kirikiri", "xp3"]
 kirikiri-img = ["kirikiri", "image", "libtlg-rs"]
 silky = []
 softpal = ["int-enum"]
diff --git a/README.md b/README.md
index 80e0d16..9714106 100644
--- a/README.md
+++ b/README.md
@@ -187,6 +187,10 @@ msg-tool create -t <script-type> <input> <output>
 | `kirikiri-tjs-ns0`/`kr-tjs-ns0` | `kirikiri` | Kirikiri TJS NS0 binary encoded script | ❌ | ❌ | ❌ | ❌ | ✔️ | ✔️ | ✔️ | |
 | `kirikiri-tjs2`/`kr-tjs2` | `kirikiri` | Kirikiri compiled TJS2 script | ✔️ | ✔️ | ❌ | ❌ | ✔️ | ✔️ | ❌ | |
 
+| Archive Type | Feature Name | Name | Unpack | Pack | Remarks |
+|---|---|---|---|---|---|
+| `kirikiri-xp3`/`kr-xp3`/`xp3` | `kirikiri-arc` | Kirikiri XP3 Archive File (.xp3) | ✔️ | ❌ | |
+
 | Image Type | Feature Name | Name | Export | Import | Export Multiple | Import Multiple | Create | Remarks |
 |---|---|---|---|---|---|---|---|---|
 | `kirikiri-tlg`/`kr-tlg` | `kirikiri-img` | Kirikiri TLG Image File (.tlg) | ✔️ | ✔️ | ❌ | ❌ | ✔️ | tlg6 is not supported when importing/creating image |
diff --git a/src/ext/io.rs b/src/ext/io.rs
index a5c33dc..57880b1 100644
--- a/src/ext/io.rs
+++ b/src/ext/io.rs
@@ -4,7 +4,7 @@ use crate::utils::encoding::decode_to_string;
 use crate::utils::struct_pack::{StructPack, StructUnpack};
 use std::ffi::CString;
 use std::io::*;
-use std::sync::Mutex;
+use std::sync::{Arc, Mutex};
 
 /// A trait to help to peek data from a reader.
 pub trait Peek {
@@ -1999,3 +1999,82 @@ impl<R: Read + Seek, W: Write + Seek, A: Fn(u64) -> Result<u64>, O: Fn(u64) -> R
         Ok(())
     }
 }
+
+/// A thread-safe wrapper around a Mutex-protected writer/reader.
+#[derive(Clone)]
+pub struct MutexWrapper<T> {
+    inner: Arc<Mutex<T>>,
+    pos: u64,
+}
+
+impl<T> MutexWrapper<T> {
+    /// Creates a new `MutexWrapper` with the given inner value.
+    pub fn new(inner: Arc<Mutex<T>>, pos: u64) -> Self {
+        MutexWrapper { inner, pos }
+    }
+}
+
+impl<T: Read + Seek> Read for MutexWrapper<T> {
+    fn read(&mut self, buf: &mut [u8]) -> Result<usize> {
+        let mut lock = self.inner.lock().map_err(|_| {
+            std::io::Error::new(std::io::ErrorKind::Other, "Failed to lock the mutex")
+        })?;
+        lock.seek(SeekFrom::Start(self.pos))?;
+        let readed = lock.read(buf)?;
+        self.pos += readed as u64;
+        Ok(readed)
+    }
+}
+
+impl<T: Read + Seek> Seek for MutexWrapper<T> {
+    fn seek(&mut self, pos: SeekFrom) -> Result<u64> {
+        let mut lock = self.inner.lock().map_err(|_| {
+            std::io::Error::new(std::io::ErrorKind::Other, "Failed to lock the mutex")
+        })?;
+        let new_pos = match pos {
+            SeekFrom::Start(offset) => offset,
+            SeekFrom::End(offset) => {
+                let len = lock.stream_length()?;
+                (len as i64 + offset as i64) as u64
+            }
+            SeekFrom::Current(offset) => (self.pos as i64 + offset as i64) as u64,
+        };
+        if new_pos > lock.stream_length()? {
+            return Err(std::io::Error::new(
+                std::io::ErrorKind::InvalidInput,
+                "Seek position is beyond the end of the stream",
+            ));
+        }
+        self.pos = new_pos;
+        Ok(self.pos)
+    }
+
+    fn stream_position(&mut self) -> Result<u64> {
+        Ok(self.pos)
+    }
+
+    fn rewind(&mut self) -> Result<()> {
+        self.pos = 0;
+        Ok(())
+    }
+}
+
+/// A writer that does nothing and always succeeds.
+pub struct EmptyWriter;
+
+impl EmptyWriter {
+    /// Creates a new `EmptyWriter`.
+    pub fn new() -> Self {
+        Self {}
+    }
+}
+
+impl Write for EmptyWriter {
+    fn write(&mut self, buf: &[u8]) -> Result<usize> {
+        Ok(buf.len())
+    }
+
+    fn flush(&mut self) -> Result<()> {
+        Ok(())
+    }
+}
diff --git a/src/scripts/kirikiri/archive/mod.rs b/src/scripts/kirikiri/archive/mod.rs
new file mode 100644
index 0000000..402fbea
--- /dev/null
+++ b/src/scripts/kirikiri/archive/mod.rs
@@ -0,0 +1 @@
+pub mod xp3;
diff --git a/src/scripts/kirikiri/archive/xp3.rs b/src/scripts/kirikiri/archive/xp3.rs
new file mode 100644
index 0000000..5d1c918
--- /dev/null
+++ b/src/scripts/kirikiri/archive/xp3.rs
@@ -0,0 +1,233 @@
+use crate::ext::io::*;
+use crate::scripts::base::*;
+use crate::types::*;
+use anyhow::Result;
+use flate2::read::ZlibDecoder;
+use std::io::{Read, Seek, Take};
+use std::sync::{Arc, Mutex};
+use xp3::XP3Reader;
+use xp3::index::file::{IndexSegmentFlag, XP3FileIndex};
+
+#[derive(Debug)]
+/// Builder for Kirikiri XP3 Archive
+pub struct Xp3ArchiveBuilder {}
+
+impl Xp3ArchiveBuilder {
+    /// Create a new Kirikiri XP3 Archive Builder
+    pub fn new() -> Self {
+        Self {}
+    }
+}
+
+impl ScriptBuilder for Xp3ArchiveBuilder {
+    fn default_encoding(&self) -> Encoding {
+        Encoding::Utf8
+    }
+
+    fn default_archive_encoding(&self) -> Option<Encoding> {
+        Some(Encoding::Utf8)
+    }
+
+    fn build_script(
+        &self,
+        buf: Vec<u8>,
+        _filename: &str,
+        _encoding: Encoding,
+        _archive_encoding: Encoding,
+        config: &ExtraConfig,
+        _archive: Option<&Box<dyn Script>>,
+    ) -> Result<Box<dyn Script>> {
+        Ok(Box::new(Xp3Archive::new(MemReader::new(buf), config)?))
+    }
+
+    fn build_script_from_file(
+        &self,
+        filename: &str,
+        _encoding: Encoding,
+        _archive_encoding: Encoding,
+        config: &ExtraConfig,
+        _archive: Option<&Box<dyn Script>>,
+    ) -> Result<Box<dyn Script>> {
+        let file = std::fs::File::open(filename)?;
+        Ok(Box::new(Xp3Archive::new(file, config)?))
+    }
+
+    fn build_script_from_reader(
+        &self,
+        reader: Box<dyn ReadSeek>,
+        _filename: &str,
+        _encoding: Encoding,
+        _archive_encoding: Encoding,
+        config: &ExtraConfig,
+        _archive: Option<&Box<dyn Script>>,
+    ) -> Result<Box<dyn Script>> {
+        Ok(Box::new(Xp3Archive::new(reader, config)?))
+    }
+
+    fn extensions(&self) -> &'static [&'static str] {
+        &["xp3"]
+    }
+
+    fn script_type(&self) -> &'static ScriptType {
+        &ScriptType::KirikiriXp3
+    }
+
+    fn is_archive(&self) -> bool {
+        true
+    }
+}
+
+#[derive(Debug)]
+/// Kirikiri XP3 Archive
+pub struct Xp3Archive<T: Read + Seek + std::fmt::Debug> {
+    reader: Arc<Mutex<T>>,
+    entries: Vec<(String, XP3FileIndex)>,
+}
+
+impl<T: Read + Seek + std::fmt::Debug> Xp3Archive<T> {
+    /// Create a new Kirikiri XP3 Archive
+    pub fn new(reader: T, _config: &ExtraConfig) -> Result<Self> {
+        let xp3_reader = XP3Reader::open_archive(reader)
+            .map_err(|e| anyhow::anyhow!("Failed to open XP3 archive: {:?}", e))?;
+        let entries = xp3_reader
+            .entries()
+            .filter_map(|(i, d)| {
+                // Skip garbage files
+                if i.find("$$$ This is a protected archive. $$$").is_some()
+                    || (i.to_lowercase().ends_with(".nene") && d.info().file_size() == 0)
+                {
+                    None
+                } else {
+                    Some((i.clone(), d.clone()))
+                }
+            })
+            .collect();
+        Ok(Self {
+            reader: Arc::new(Mutex::new(xp3_reader.close().1)),
+            entries,
+        })
+    }
+}
+
+impl<T: Read + Seek + std::fmt::Debug + 'static> Script for Xp3Archive<T> {
+    fn default_output_script_type(&self) -> OutputScriptType {
+        OutputScriptType::Json
+    }
+
+    fn default_format_type(&self) -> FormatOptions {
+        FormatOptions::None
+    }
+
+    fn is_archive(&self) -> bool {
+        true
+    }
+
+    fn iter_archive_filename<'a>(
+        &'a self,
+    ) -> Result<Box<dyn Iterator<Item = Result<String>> + 'a>> {
+        Ok(Box::new(
+            self.entries.iter().map(|entry| Ok(entry.0.clone())),
+        ))
+    }
+
+    fn open_file<'a>(&'a self, index: usize) -> Result<Box<dyn ArchiveContent + 'a>> {
+        let index = self
+            .entries
+            .iter()
+            .nth(index)
+            .ok_or(anyhow::anyhow!("Index out of bounds: {}", index))?
+            .1
+            .clone();
+        let entry = Entry::new(self.reader.clone(), index);
+        Ok(Box::new(entry))
+    }
+}
+
+struct Entry<T: Read + Seek> {
+    reader: Arc<Mutex<T>>,
+    index: XP3FileIndex,
+    cache: Option<ZlibDecoder<Take<MutexWrapper<T>>>>,
+    pos: u64,
+    entries_pos: Vec<u64>,
+}
+
+impl<T: Read + Seek> Entry<T> {
+    fn new(reader: Arc<Mutex<T>>, index: XP3FileIndex) -> Self {
+        let mut pos = 0;
+        let entries_pos = index
+            .segments()
+            .iter()
+            .map(|seg| {
+                let p = pos;
+                pos += seg.original_size();
+                p
+            })
+            .collect();
+        Self {
+            reader,
+            index,
+            cache: None,
+            pos: 0,
+            entries_pos,
+        }
+    }
+}
+
+impl<T: Read + Seek> ArchiveContent for Entry<T> {
+    fn name(&self) -> &str {
+        &self.index.info().name()
+    }
+}
+
+impl<T: Read + Seek> Read for Entry<T> {
+    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
+        if self.pos >= self.index.info().file_size() {
+            self.cache.take();
+            return Ok(0);
+        }
+        if let Some(cache) = self.cache.as_mut() {
+            let readed = cache.read(buf)?;
+            if readed > 0 {
+                self.pos += readed as u64;
+                return Ok(readed);
+            }
+            self.cache.take();
+        }
+        let seg_index = match self.entries_pos.binary_search(&self.pos) {
+            Ok(i) => i,
+            Err(i) => {
+                if i == 0 {
+                    0
+                } else {
+                    i - 1
+                }
+            }
+        };
+        let seg = &self.index.segments()[seg_index];
+        let start_pos = seg.data_offset();
+        let seg_pos = self.entries_pos[seg_index];
+        let skip_pos = self.pos - seg_pos;
+        let read_size = seg.saved_size();
+        match seg.flag() {
+            IndexSegmentFlag::UnCompressed => {
+                let mut lock = MutexWrapper::new(self.reader.clone(), start_pos + skip_pos);
+                let readed = (&mut lock).take(read_size - skip_pos).read(buf)?;
+                self.pos += readed as u64;
+                Ok(readed)
+            }
+            IndexSegmentFlag::Compressed => {
+                let mut cache = ZlibDecoder::new(
+                    MutexWrapper::new(self.reader.clone(), start_pos).take(read_size),
+                );
+                if skip_pos != 0 {
+                    let mut e = EmptyWriter::new();
+                    std::io::copy(&mut (&mut cache).take(skip_pos), &mut e)?; // skip
+                }
+                let readed = cache.read(buf)?;
+                self.pos += readed as u64;
+                self.cache = Some(cache);
+                Ok(readed)
+            }
+        }
+    }
+}
diff --git a/src/scripts/kirikiri/mod.rs b/src/scripts/kirikiri/mod.rs
index 294ef3a..f5e7970 100644
--- a/src/scripts/kirikiri/mod.rs
+++ b/src/scripts/kirikiri/mod.rs
@@ -1,4 +1,6 @@
 //! Kirikiri Scripts
+#[cfg(feature = "kirikiri-arc")]
+pub mod archive;
 #[cfg(feature = "kirikiri-img")]
 pub mod image;
 pub mod ks;
diff --git a/src/scripts/mod.rs b/src/scripts/mod.rs
index 47eaa8a..f107500 100644
--- a/src/scripts/mod.rs
+++ b/src/scripts/mod.rs
@@ -154,6 +154,8 @@ lazy_static::lazy_static! {
         Box::new(will_plus::img::wip::WillPlusWipImageBuilder::new()),
         #[cfg(feature = "artemis")]
         Box::new(artemis::txt::ArtemisTxtBuilder::new()),
+        #[cfg(feature = "kirikiri-arc")]
+        Box::new(kirikiri::archive::xp3::Xp3ArchiveBuilder::new()),
     ];
     /// A list of all script extensions.
     pub static ref ALL_EXTS: Vec<String> =
diff --git a/src/types.rs b/src/types.rs
index 87fe59e..6084f67 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -626,6 +626,10 @@ pub enum ScriptType {
     #[value(alias = "kr", alias = "kr-ks", alias = "kirikiri-ks")]
     /// Kirikiri script
     Kirikiri,
+    #[cfg(feature = "kirikiri-arc")]
+    #[value(alias = "kr-xp3", alias = "xp3")]
+    /// Kirikiri XP3 archive
+    KirikiriXp3,
     #[cfg(feature = "kirikiri-img")]
     #[value(alias("kr-tlg"))]
     /// Kirikiri TLG image