diff --git a/doom/config.el b/doom/config.el
index cc31529..425154f 100644
--- a/doom/config.el
+++ b/doom/config.el
@@ -35,6 +35,8 @@
 ;; numbers are disabled. For relative line numbers, set this to `relative'.
 (setq display-line-numbers-type t)
 
+(setq calendar-week-start-day 1)
+(setq calendar-day-header-array ["日" "月" "火" "水" "木" "金" "土"])
 
 ;; Here are some additional functions/macros that could help you configure Doom:
 ;;
diff --git a/home-gui.nix b/home-gui.nix
index da012b3..218f750 100644
--- a/home-gui.nix
+++ b/home-gui.nix
@@ -7,6 +7,7 @@
     enable = true;
     settings = {
       window = {
+        decorations = "buttonless";
         padding = {
           x = 12;
           y = 12;