diff --git a/dev-ml/tiny_httpd/files/tiny_httpd-0.21-noseq.patch b/dev-ml/tiny_httpd/files/tiny_httpd-0.21-noseq.patch
new file mode 100644
index 0000000..ef3b10c
--- /dev/null
+++ b/dev-ml/tiny_httpd/files/tiny_httpd-0.21-noseq.patch
@@ -0,0 +1,51 @@
+From 6200b0202f2a42752a861ae31ea582cf77223d03 Mon Sep 17 00:00:00 2001
+From: Shin'ya Minazuki <shinyoukai@chaotic.ninja>
+Date: Tue, 25 Aug 2026 11:52:34 -0400
+Subject: [PATCH] Compile without using the seq library
+
+---
+ src/core/dune | 1 -
+ src/dune      | 1 -
+ src/html/dune | 2 +-
+ 3 files changed, 1 insertion(+), 3 deletions(-)
+
+diff --git a/src/core/dune b/src/core/dune
+index 757eb8e5..9a8fafe7 100644
+--- a/src/core/dune
++++ b/src/core/dune
+@@ -4,7 +4,6 @@
+  (private_modules parse_ common_)
+  (libraries
+   threads
+-  seq
+   hmap
+   iostream
+   (select
+diff --git a/src/dune b/src/dune
+index 1e38b1ef..9e3e0bd3 100644
+--- a/src/dune
++++ b/src/dune
+@@ -4,7 +4,6 @@
+  (flags :standard -open Tiny_httpd_core)
+  (libraries
+   threads
+-  seq
+   unix
+   hmap
+   (re_export tiny_httpd.core)
+diff --git a/src/html/dune b/src/html/dune
+index a9cc3c54..ac337913 100644
+--- a/src/html/dune
++++ b/src/html/dune
+@@ -2,7 +2,7 @@
+  (name tiny_httpd_html)
+  (public_name tiny_httpd.html)
+  (flags :standard -open Tiny_httpd_core)
+- (libraries seq tiny_httpd.core))
++ (libraries tiny_httpd.core))
+ 
+ (rule
+  (targets html_.ml)
+-- 
+2.54.0
+
diff --git a/dev-ml/tiny_httpd/metadata.xml b/dev-ml/tiny_httpd/metadata.xml
new file mode 100644
index 0000000..8cc051e
--- /dev/null
+++ b/dev-ml/tiny_httpd/metadata.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<name>Shin'ya Minazuki</name>
+		<email>shinyoukai@chaotic.ninja</email>
+	</maintainer>
+  <use>
+	  <flag name="camlzip">Interface to camlzip for tiny_httpd</flag>
+  </use>
+  <upstream>
+	  <doc>https://c-cube.github.io/tiny_httpd/</doc>
+	  <bugs-to>https://github.com/c-cube/tiny_httpd/issues</bugs-to>
+	  <remote-id type="github">c-cube/tiny_httpd</remote-id>
+	  <maintainer>
+		  <name>Simon Cruanes</name>
+		  <email>simon.cruanes.2007@m4x.org</email>
+	  </maintainer>
+  </upstream>
+</pkgmetadata>
diff --git a/dev-ml/tiny_httpd/tiny_httpd-0.21.ebuild b/dev-ml/tiny_httpd/tiny_httpd-0.21.ebuild
new file mode 100644
index 0000000..853fce2
--- /dev/null
+++ b/dev-ml/tiny_httpd/tiny_httpd-0.21.ebuild
@@ -0,0 +1,53 @@
+# Copyright 2026 Shin'ya Minzazuki
+EAPI=8
+
+inherit dune multiprocessing
+
+DESCRIPTION="Minimal HTTP server with a small request router"
+HOMEPAGE="
+	https://github.com/c-cube/tiny_httpd
+	https://opam.ocaml.org/packages/tiny_httpd
+"
+SRC_URI="https://github.com/c-cube/${PN}/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0/${PV}"
+# Use stable keyword: www-apps/kosuzu now depends on it
+KEYWORDS="amd64"
+IUSE="camlzip ocamlopt test"
+
+RDEPEND="
+	dev-ml/hmap:=
+	dev-ml/iostream:=[ocamlopt?]
+	dev-ml/logs:=[ocamlopt?]
+	dev-ml/result:=[ocamlopt?]
+	camlzip? ( >=dev-ml/camlzip-1.06:=[ocamlopt?] )
+"
+DEPEND="
+	${RDEPEND}
+	test? (
+		dev-ml/qtest
+		dev-ml/ounit2
+		dev-ml/ptime
+		dev-ml/qcheck
+		net-misc/curl
+	)
+"
+
+RESTRICT="!test? ( test ) mirror"
+REQUIRED_USE="test? ( camlzip )"
+
+PATCHES=(
+	${FILESDIR}/${P}-noseq.patch
+)
+
+src_compile() {
+	local pkgs="tiny_httpd"
+	use camlzip && pkgs="${pkgs},tiny_httpd_camlzip"
+	dune build -p "${pkgs}" -j $(get_makeopts_jobs) || die
+}
+
+src_install() {
+	dune_src_install tiny_httpd
+	use camlzip && dune_src_install "tiny_httpd_camlzip"
+}
diff --git a/www-apps/kosuzu/Manifest b/www-apps/kosuzu/Manifest
index 316d3b7..ceba2a6 100644
--- a/www-apps/kosuzu/Manifest
+++ b/www-apps/kosuzu/Manifest
@@ -1 +1,2 @@
+DIST kosuzu-1.4.7.tar.gz 28255 BLAKE2B 6a362c1cd2b4bfe480b247187c33f87e697967036873e051d40b03953ce06f1f3c583a4317ad41bdd390b0d7972e4e3cb50fc4abf61323f7c9a004f02c4484c2 SHA512 cd1f05e07df5e808f3a25dd5181e0657233a64b49c225b0104fce513bb86471fba75ac31685a377cdfe4e0bd654bd44569ca41848e44baf6cbbb61cbb410b136
 DIST kosuzu-82.tar.gz 27528 BLAKE2B 5b6f958596015da2f8a7de705d8ad5e0a16ae69e91212ff943d538bdc6f9d69750549bb2825531b61e3a79f45f18499bd85444f28a0ceeb0759c4e06f47ac573 SHA512 143ddc0782df3f35e248955676e1be72f2930d8b21ded688319296b9c5e2f0757660c344e97982576530ffcbf6cbdb7403cc8203eb5b875a18a9e410dcc51ae4
diff --git a/www-apps/kosuzu/kosuzu-1.4.7.ebuild b/www-apps/kosuzu/kosuzu-1.4.7.ebuild
new file mode 100644
index 0000000..5397a3f
--- /dev/null
+++ b/www-apps/kosuzu/kosuzu-1.4.7.ebuild
@@ -0,0 +1,27 @@
+# Copyright 2026 Shin'ya Minazuki
+
+EAPI=8
+
+inherit dune
+
+DESCRIPTION="Text archival and exchange"
+HOMEPAGE="https://git.chaotic.ninja/shinyoukai/kosuzu"
+SRC_URI="https://distfiles.chaotic.ninja/pub/${PN}/${P}.tar.gz"
+
+LICENSE="EUPL-1.2"
+SLOT="0"
+KEYWORDS="amd64 arm arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc x86"
+
+IUSE="ocamlopt"
+
+DEPEND="
+	>=dev-ml/cmdliner-1.3.0
+	dev-ml/msgpck
+	dev-ml/ocurl
+	dev-ml/text_parse
+	>=dev-ml/tiny_httpd-0.21
+"
+RDEPEND="${DEPEND}"
+BDEPEND="${DEPEND}"
+
+RESTRICT="mirror"