Based on the game by Haikuo-Soft.A story about the reunion of 4 childhood friends, Yuzuki, Matsuri, Nono and Makoto, in their deserted old school campus, Mochitsuki Academy. 3 years ago, they buried a time capsule under a tree inside the school and made a promise. A promise to meet again after exactly 3 years from that day. And the day of promise has finally arrived.
- Other Title: Yotsunoha, よつのは, Four-leaf Clover
- Status: Completed
- Sub/Dub: Anime Sub
- Anime Type: OVA
- Genres: Romance, School, Comedy, Ecchi, Game, Seinen, Animation
- Characters: Amachi, Matsuri, Iori, Yuzuki, Nekomiya, Nono, Yuuki, Makoto
- Score: 6.31
- Rank: 7748
- Popularity: 5589