diff --git a/Casks/l/lets.rb b/Casks/l/lets.rb
new file mode 100644
index 000000000000..c0498a5a368d
--- /dev/null
+++ b/Casks/l/lets.rb
@@ -0,0 +1,38 @@
+cask "lets" do
+  version "3.1.0"
+  sha256 "24ee0b7e6a9bfc27102b309b43b58f6941e8b3d1db68fa7da3e2bb3a4c0f3544"
+
+  url "https://d1lzipub3cpsx.cloudfront.net/download/apps/2/#{version}/LETS-Installer.zip",
+      verified: "d1lzipub3cpsx.cloudfront.net/"
+  name "LETS Desktop App"
+  name "LETSデスクトップアプリ"
+  desc "Font manager for Fontworks' LETS"
+  homepage "https://lets.fontworks.co.jp/"
+
+  livecheck do
+    url "https://lets.fontworks.co.jp/download"
+    regex(/class="c-download__txt"[^>]*?>macOS[^<]*?(\d+(?:\.\d+)+)</i)
+  end
+
+  depends_on macos: ">= :mojave"
+
+  installer manual: "LETS-Installer.app/Contents/MacOS/LETS-Installer"
+
+  uninstall launchctl: "LETS",
+            quit:      "jp.co.fontworks.LETS",
+            delete:    [
+              "/Applications/Fontworks/LETS",
+              "/Applications/Fontworks/LETS-Ver#{version}",
+            ],
+            rmdir:     "/Applications/Fontworks"
+
+  zap trash: [
+    "/Library/Application Support/Fontworks/LETS",
+    "/Library/LaunchAgents/jp.co.fontworks.LETS.plist",
+    "~/Library/Application Support/Fontworks/LETS",
+    "~/Library/Caches/jp.co.fontworks.LETS",
+    "~/Library/HTTPStorages/jp.co.fontworks.LETS",
+    "~/Library/HTTPStorages/jp.co.fontworks.LETS.binarycookies",
+    "~/Library/Preferences/jp.co.fontworks.LETS.plist",
+  ]
+end