Neo Satomi Hakkenden: Satomi-chanchi no Hachi Danshi
ネオ里見八犬伝 サトミちゃんちの8男子Neo Satomi Hakkenden: Satomi-chanchi no Hachi Danshi
The story
ONAAn animated promotional video for the Neo Satomi Hakkenden: Satomi-chanchi no Hachi Danshi light novel series. (Source: AniDB)