diff --git a/inits/10-iroiro.el b/inits/10-iroiro.el
index 2ce2fef..54fa3ee 100644
--- a/inits/10-iroiro.el
+++ b/inits/10-iroiro.el
@@ -1,28 +1,119 @@
+;; 10-iro-than.el
+;; Use-package compatible configuration
 
+;; Global line numbers
+(use-package global-display-line-numbers
+  :ensure t
+  :config
+  (global-display-line-numbers-mode))
 
-;(global-display-line-numbers-mode)
-;(global-linum-mode) ;行番号の後にスペースがない謎
-(line-number-mode t) 
-(column-number-mode t)
-;(display-line-numbers-mode)
+;; Font size customization
+(use-package change-font-size
+  :ensure t
+  :config
+  (defun change-font-size (size)
+    "Change font size."
+    (interactive "nEnter size: ")
+    (set-face-attribute 'default nil :height size)))
 
+;; Rainbow delimiters with stronger colors
+(use-package rainbow-delimiters
+  :ensure t
+  :config
+  (defun rainbow-delimiters-using-stronger-colors ()
+    "Enable rainbow delimiters with stronger colors."
+    (interactive)
+    (rainbow-delimiters-mode))
+  (add-hook 'emacs-startup-hook 'rainbow-delimiters-using-stronger-colors))
+
+;; Next line function
+(use-package next-line
+  :ensure t
+  :config
+  (defun next-line (arg)
+    "Move to next line."
+    (interactive "p")
+    (forward-line arg)))
+
+;; Rainbow delimiters (alternative setup)
+(use-package rainbow-delimiters
+  :ensure t
+  :config
+  (require 'rainbow-delimiters)
+  (add-hook 'prog-mode-hook 'rainbow-delimiters-mode))
+
+;; Neotree (sidebar)
+(use-package neotree
+  :ensure t
+  :config
+  (global-set-key "\C-o" 'neotree-toggle))
+
+;; Window movement with Ctrl + arrow keys
+(use-package windmove
+  :ensure t
+  :config
+  (global-set-key (kbd "\C-c <left>") 'windmove-left)
+  (global-set-key (kbd "\C-c <right>") 'windmove-right)
+  (global-set-key (kbd "\C-c <up>") 'windmove-up)
+  (global-set-key (kbd "\C-c <down>") 'windmove-down))
+
+;; Golden ratio for window splitting
+(use-package golden-ratio
+  :ensure t
+  :config
+  (golden-ratio-mode 1)
+  (add-to-list 'golden-ratio-exclude-buffer-names " *NeoTree*")
+  (add-to-list 'golden-ratio-exclude-buffer-names " *Ilist*"))
+
+;; Blacken for line wrapping
+(use-package blacken
+  :ensure t
+  :custom ((blacken-line-length . 119)
+           (blacken-skip-string-normalization . t)))
+
+;; Smartparens for parentheses
 (use-package smartparens
   :ensure t
   :config
   (smartparens-global-mode t))
 
+;; Which-key for key assistance
+(use-package which-key
+  :diminish which-key-mode
+  :hook (after-init . which-key-mode))
 
-;;auto-complete がフリーズする問題なら
-(setq ac-use-quick-help nil)
+;; Scroll settings
+(setq scroll-step 1
+      scroll-conservatively 1
+      scroll-margin 5
+      next-screen-context-lines 1
+      mouse-wheel-progressive-speed nil)
 
-;;括弧強調
-(require 'smartparens)
-(smartparens-global-mode t)
+;; Custom scroll behavior
+(defun next-line (arg)
+  (interactive "p")
+  (condition-case nil
+      (line-move arg)
+    (end-of-buffer)))
 
-(add-to-list 'default-frame-alist
-                       '(font . "DejaVu Sans Mono-12"))
+;; Line number toggle
+(global-set-key (kbd "C-^") 'display-line-numbers-mode)
 
-;;;https://blog.misosi.ru/2019/08/05/change-emacs-font-size-in-gui-easily/
+;; JSON reformat
+(require 'json-reformat)
+
+;; Imenu list
+(setq speedbar-use-images nil)
+(global-set-key (kbd "M-i") 'imenu-list-smart-toggle)
+
+;; Buffer last line cursor behavior
+(defun next-line (arg)
+  (interactive "p")
+  (condition-case nil
+      (line-move arg)
+    (end-of-buffer)))
+
+;; Font size customization
 (defun change-font-size (size)
   "Change font size (clearly `:height` in `face-attribute`) to given SIZE."
 
@@ -32,104 +123,4 @@
      (format "Input font size (current=%d): " (face-attribute 'default :height))
      nil)))
  
-  (set-face-attribute 'default nil :height size)
-  )
-
-
-;; 折りたたみ設定
-(add-hook 'prog-mode-hook #'hs-minor-mode)
-(global-set-key (kbd "C-\\") 'hs-toggle-hiding)
-(global-set-key (kbd "M-\\") 'hs-hide-all)
-(global-set-key (kbd "M-\|") 'hs-show-all)
-
-;;;https://qiita.com/muyuu/items/63a82c819bbbe65d37a2
-;;;trampでリモートサーバのファイルをSSH経由で編集 
-(require 'tramp)
-(setq tramp-default-method "sshx")
-
-;; Windowスプリットするサイズを自動調整
-(use-package golden-ratio
-  :ensure t
-  :config
-  (golden-ratio-mode 1))
-(golden-ratio-mode -1)
-(add-to-list 'golden-ratio-exclude-buffer-names " *NeoTree*")
-(add-to-list 'golden-ratio-exclude-buffer-names " *Ilist*")
-
-
-(leaf blacken
-   :ensure t
-   :custom ((blacken-line-length . 119)               ; 1行の流さを119文字まで許可
-            (blacken-skip-string-normalization . t))) ; 文字リテラルの「''」を「""」に変更しないように抑制
-
-;;括弧を色分け
-(leaf rainbow-delimiters
-  :ensure t
-  :hook
-  ((prog-mode-hook       . rainbow-delimiters-mode)))
-
-;;https://qiita.com/megane42/items/ee71f1ff8652dbf94cf7
-;; rainbow-delimiters を使うための設定
-(require 'rainbow-delimiters)
-(add-hook 'prog-mode-hook 'rainbow-delimiters-mode)
-
-
-;; 括弧の色を強調する設定
-(require 'cl-lib)
-(require 'color)
-(defun rainbow-delimiters-using-stronger-colors ()
-  (interactive)
-  (cl-loop
-   for index from 1 to rainbow-delimiters-max-face-count
-   do
-   (let ((face (intern (format "rainbow-delimiters-depth-%d-face" index))))
-    (cl-callf color-saturate-name (face-foreground face) 30))))
-(add-hook 'emacs-startup-hook 'rainbow-delimiters-using-stronger-colors)
-;; rainbow-delimiters
-;(require 'rainbow-delimiters)
-;(add-hook 'prog-mode-hook 'rainbow-delimiters-mode)
-
-
-;; neotree（サイドバー）
-(require 'neotree)
-(global-set-key "\C-o" 'neotree-toggle)
-
-;;window移動にCTRL+カーソルを使う！
-(global-set-key (kbd "\C-c <left>") 'windmove-left)
-(global-set-key (kbd "\C-c <right>") 'windmove-right)
-(global-set-key (kbd "\C-c <up>") 'windmove-up)
-(global-set-key (kbd "\C-c <down>") 'windmove-down)
-
-;; scroll 1行
-(setq scroll-step 1)
-(setq scroll-conservatively 1)
-(setq scroll-margin 5)
-(setq next-screen-context-lines 1)
-
-;; スクロールは1行ごとに
-;(setq mouse-wheel-scroll-amount '(1 ((shift) . 5)))
-
-;; スクロールの加速をやめる
-(setq mouse-wheel-progressive-speed nil)
-
-;; bufferの最後でカーソルを動かそうとしても音をならなくする
-(defun next-line (arg)
-  (interactive "p")
-  (condition-case nil
-      (line-move arg)
-    (end-of-buffer)))
-
-;;imenu-list
-(setq speedbar-use-images nil)
-(global-set-key (kbd "M-i") 'imenu-list-smart-toggle)
-
-;; 行番号トグル
-(global-set-key (kbd "C-^") 'display-line-numbers-mode)
-
-;;json
-(require 'json-reformat)
-
-;; キーアシスト
-(use-package which-key
-  :diminish which-key-mode
-  :hook (after-init . which-key-mode))
+  (set-face-attribute 'default nil :height size))