diff --git a/.config/ai/scpt b/.config/ai/scpt
index 7a4d642..a1905d1 160000
--- a/.config/ai/scpt
+++ b/.config/ai/scpt
@@ -1 +1 @@
-Subproject commit 7a4d642e418bbe43d1b5cfaa8cf7ead45363e5dd
+Subproject commit a1905d104b9e7a5a9799d32febb27289a4ff420f
diff --git a/Cargo.toml b/Cargo.toml
index 8f34ec0..fbc61fc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,6 @@ description = "latest@2024-08-18"
 seahorse = "*"
 reqwest = { version = "*", features = ["blocking", "json"] }
 tokio = { version = "1", features = ["full"] }
-shellexpand = "*"
 config = "*"
 serde = "*"
 serde_json = "*"
diff --git a/src/data.rs b/src/data.rs
index f7835b4..0a49911 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -5,37 +5,50 @@ use std::fs;
 use std::fs::OpenOptions;
 use std::io::Read;
 use std::io::Write;
-use std::path::Path;
+use std::path::{Path, PathBuf};
+use std::env;
+
+/// ホームディレクトリパスを展開するユーティリティ関数
+/// "~"で始まるパスをユーザーのホームディレクトリに展開します
+fn expand_home_path(path: &str) -> PathBuf {
+    if path.starts_with("~") {
+        let home = env::var("HOME").unwrap_or_else(|_| ".".to_string());
+        let path_without_tilde = path.strip_prefix("~/").unwrap_or(&path[1..]);
+        PathBuf::from(home).join(path_without_tilde)
+    } else {
+        PathBuf::from(path)
+    }
+}
 
 pub fn data_file(s: &str) -> String {
-    let file = "/.config/ai/";
-    let mut f = shellexpand::tilde("~").to_string();
-    f.push_str(&file);
-    let path = Path::new(&f);
-    if path.is_dir() == false {
-        let _ = fs::create_dir_all(f.clone());
+    let path = expand_home_path("~/.config/ai");
+    
+    if !path.is_dir() {
+        let _ = fs::create_dir_all(&path);
     }
+    
+    let mut path_str = path.to_string_lossy().to_string();
     match &*s {
-        "toml" => f + &"token.toml",
-        "json" => f + &"token.json",
-        "refresh" => f + &"refresh.toml",
-        _ => f + &"." + &s,
+        "toml" => path_str + "/token.toml",
+        "json" => path_str + "/token.json",
+        "refresh" => path_str + "/refresh.toml",
+        _ => path_str + "/." + &s,
     }
 }
 
 pub fn log_file(s: &str) -> String {
-    let file = "/.config/ai/txt/";
-    let mut f = shellexpand::tilde("~").to_string();
-    f.push_str(&file);
-    let path = Path::new(&f);
-    if path.is_dir() == false {
-        let _ = fs::create_dir_all(f.clone());
+    let path = expand_home_path("~/.config/ai/txt");
+    
+    if !path.is_dir() {
+        let _ = fs::create_dir_all(&path);
     }
+    
+    let mut path_str = path.to_string_lossy().to_string();
     match &*s {
-        "n1" => f + &"notify_cid.txt",
-        "n2" => f + &"notify_cid_run.txt",
-        "c1" => f + &"comment_cid.txt",
-        _ => f + &s,
+        "n1" => path_str + "/notify_cid.txt",
+        "n2" => path_str + "/notify_cid_run.txt",
+        "c1" => path_str + "/comment_cid.txt",
+        _ => path_str + "/" + &s,
     }
 }
 
@@ -262,11 +275,9 @@ pub fn data_refresh(s: &str) -> String {
 }
 
 pub fn data_scpt(s: &str) -> String {
-    let s = String::from(s);
-    let file = "/.config/ai/scpt/".to_owned() + &s + &".zsh";
-    let mut f = shellexpand::tilde("~").to_string();
-    f.push_str(&file);
-    return f;
+    let mut path = expand_home_path("~/.config/ai/scpt");
+    path.push(format!("{}.zsh", s));
+    path.to_string_lossy().to_string()
 }
 
 #[derive(Serialize, Deserialize)]
@@ -603,11 +614,10 @@ pub fn w_cid(cid: String, file: String, t: bool) -> bool {
 }
 
 pub fn c_follow_all() {
-    let file = "/.config/ai/scpt/follow_all.zsh";
-    let mut f = shellexpand::tilde("~").to_string();
-    f.push_str(&file);
+    let path = expand_home_path("~/.config/ai/scpt/follow_all.zsh");
+    
     use std::process::Command;
-    let output = Command::new(&f).output().expect("zsh");
+    let output = Command::new(path.to_str().unwrap()).output().expect("zsh");
     let d = String::from_utf8_lossy(&output.stdout);
     let d = "\n".to_owned() + &d.to_string();
     println!("{}", d);
@@ -617,9 +627,10 @@ pub fn c_openai_key(c: &Context) {
     let api = c.args[0].to_string();
     let o = "api='".to_owned() + &api.to_string() + &"'".to_owned();
     let o = o.to_string();
-    let l = shellexpand::tilde("~") + "/.config/ai/openai.toml";
-    let l = l.to_string();
-    let mut l = fs::File::create(l).unwrap();
+    
+    let path = expand_home_path("~/.config/ai/openai.toml");
+    
+    let mut l = fs::File::create(&path).unwrap();
     if o != "" {
         l.write_all(&o.as_bytes()).unwrap();
     }
@@ -628,9 +639,10 @@ pub fn c_openai_key(c: &Context) {
 
 impl Open {
     pub fn new() -> Result<Self, ConfigError> {
-        let d = shellexpand::tilde("~") + "/.config/ai/openai.toml";
+        let path = expand_home_path("~/.config/ai/openai.toml");
+        
         let s = Config::builder()
-            .add_source(File::with_name(&d))
+            .add_source(File::with_name(path.to_str().unwrap()))
             .add_source(config::Environment::with_prefix("APP"))
             .build()?;
         s.try_deserialize()