diff --git a/package-lock.json b/package-lock.json
index 820a8741..1b49a9ab 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -40,6 +40,7 @@
         "preact-render-to-string": "^6.6.1",
         "pretty-bytes": "^7.0.1",
         "pretty-time": "^1.1.0",
+        "quartz-line-age": "1.0.0",
         "reading-time": "^1.5.0",
         "rehype-autolink-headings": "^7.1.0",
         "rehype-citation": "^2.3.1",
@@ -5938,6 +5939,16 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
+    "node_modules/quartz-line-age": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/quartz-line-age/-/quartz-line-age-1.0.0.tgz",
+      "integrity": "sha512-VuFsYIMtfIr1HSoRYvzDHEy6uZBzdQ487abz+GFf6stl4+5IxE1zOht4UL3uju8CNFeakKqR3GxsRHHZBFCgzA==",
+      "license": "MIT",
+      "dependencies": {
+        "rehype-raw": "^7.0.0",
+        "rehype-slug": "^6.0.0"
+      }
+    },
     "node_modules/queue-microtask": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
@@ -6528,312 +6539,6 @@
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-      "cpu": [
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-        "!arm64",
-        "!riscv64",
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-      "license": "MIT",
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-      "peer": true,
-      "dependencies": {
-        "sass": "1.93.2"
-      }
-    },
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-      "license": "MIT",
-      "optional": true,
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-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "peer": true,
-      "engines": {
-        "node": ">=14.0.0"
-      }
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     "node_modules/satori": {
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diff --git a/package.json b/package.json
index 363bb981..8d15e5ac 100644
--- a/package.json
+++ b/package.json
@@ -95,7 +95,8 @@
     "vfile": "^6.0.3",
     "workerpool": "^9.3.3",
     "ws": "^8.18.3",
-    "yargs": "^18.0.0"
+    "yargs": "^18.0.0",
+    "quartz-line-age": "1.0.0"
   },
   "devDependencies": {
     "@types/d3": "^7.4.3",
diff --git a/quartz.config.ts b/quartz.config.ts
index 4883abc8..97c9b546 100644
--- a/quartz.config.ts
+++ b/quartz.config.ts
@@ -1,5 +1,6 @@
 import { QuartzConfig } from "./quartz/cfg"
 import * as Plugin from "./quartz/plugins"
+import { LineAgePre, LineAgeMid, LineAgePost } from "quartz-line-age"
 
 /**
  * Quartz 4 Configuration
@@ -20,7 +21,7 @@ const config: QuartzConfig = {
     repoUrl: "https://git.matsuuratomoya.com/tomoyanonymous/quartz-research-note",
     ignorePatterns: ["private", "templates", ".obsidian"],
     defaultDateType: "modified",
-    fediverseCreator:"@tomoya@social.matsuuratomoya.com",
+    fediverseCreator: "@tomoya@social.matsuuratomoya.com",
     theme: {
       fontOrigin: "googleFonts",
       cdnCaching: true,
@@ -58,6 +59,7 @@ const config: QuartzConfig = {
   plugins: {
     transformers: [
       Plugin.FrontMatter(),
+      LineAgePre(),
       Plugin.CreatedModifiedDate({
         priority: ["frontmatter", "git", "filesystem"],
       }),
@@ -69,9 +71,14 @@ const config: QuartzConfig = {
         },
         keepBackground: false,
       }),
-      Plugin.ObsidianFlavoredMarkdown({ enableInHtmlEmbed: false }),
-      Plugin.GitHubFlavoredMarkdown(),
       Plugin.TableOfContents(),
+      LineAgeMid(),
+      Plugin.ObsidianFlavoredMarkdown({ enableInHtmlEmbed: false }),
+      LineAgePost({
+        freshColor: { r: 32, g: 126, b: 143 },
+        oldColor: { r: 215, g: 239, b: 247 },
+      }),
+      Plugin.GitHubFlavoredMarkdown(),
       Plugin.CrawlLinks({ markdownLinkResolution: "shortest" }),
       Plugin.Description(),
       Plugin.Latex({ renderEngine: "katex" }),
diff --git a/quartz/styles/custom.scss b/quartz/styles/custom.scss
index 9c8847d2..343acb5c 100644
--- a/quartz/styles/custom.scss
+++ b/quartz/styles/custom.scss
@@ -1,4 +1,5 @@
 @use "./base.scss";
+@use "quartz-line-age/src/line-age.css";
 :root {
     --light: #d7eff7;
     --dark: #284b63;