diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index aebd38c..7d02963 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -12,6 +12,6 @@
 			{{ partial "metadata.html" . }}
 		</header>
 		<br>
-		{{ .Content }}
+		{{ partial "content.html" .Content }}
 	</article>
 {{ end }}
diff --git a/layouts/index.html b/layouts/index.html
index 05090d9..3e3236b 100644
--- a/layouts/index.html
+++ b/layouts/index.html
@@ -2,7 +2,7 @@
 	{{ partial "pagination.html" . }}
 	{{ if eq .Paginator.PageNumber 1 }}
 		<h1>{{ .Title }}</h1>
-		{{ .Content }}
+		{{ partial "content.html" .Content }}
 		<hr>
 	{{ end }}
 	{{ range .Paginator.Pages }}
@@ -11,7 +11,7 @@
 				<h2><a href="{{ .RelPermalink }}">{{ .Title }}</a></h2>
 				{{ partial "metadata.html" . }}
 			</header>
-			{{ .Content | truncate 500 }} <a href="{{ .RelPermalink }}">Read more &raquo;</a>
+			{{ partial "content.html" .Content | truncate 500 }} <a href="{{ .RelPermalink }}">Read more &raquo;</a>
 		</article>
 		<br>
 	{{ end }}
diff --git a/layouts/partials/content.html b/layouts/partials/content.html
new file mode 100644
index 0000000..133428f
--- /dev/null
+++ b/layouts/partials/content.html
@@ -0,0 +1 @@
+{{ replaceRE `\[([^\]]*)\]{([^\}]*)}` `<ruby lang="ja">$1<rp>(</rp><rt>$2</rt><rp>)</rp></ruby>` . | safeHTML }}