Naruto:Bound by Chakra

From the letters page: Ren'Py RPG Naruto:Bound by Chakra, by zool, is ongoing (version 0.16). It mixes harem, parody and MILF, presented with 2D art. You control a male protagonist. Available for Windows, Mac, Linux and Android, and playable in the browser on Xgame9, 628 MB.

From the box: “After failing to become a Genin due to your teammates slacking off, you catch the attention of Danzo, leader of the Foundation. For the next four years, you’re trained in secret, becoming a fully-fledged ninja.”