Ihoujin (YAMAMOTO Matsuki)

From [MangaHelpers](https://www.mangaupdates.com/groups.html?id=1011): Aona Ritsu is a high school student who would like to stand up for justice, but is often afraid. One day, when he tries to stand up for what's right, he ends up meeting a man who has come from the past-- the Babylonian King Hammurabi. Now Hammurabi has come to Ritsu's house, and he is ready to introduce his exacting eye-for-an-eye code of law to modern Japan. [tethysdust]