The original series ended with them together. This one asks what happens after the credits stop rolling, when marriage means actually dealing with each other's families and the friction that comes with real commitment. It's quieter than the TV series, more interested in the small moments where Kei and Mizuho have to actually communicate instead of just chemistry across a classroom. The ecchi edges toward fanservice, but the core of it stays true to what made people care about this couple in the first place. If you watched Onegai Teacher hoping they'd make it work, this is what making it work actually looks like.

Kei and Mizuho are a married couple going through a rough stretch in their relationship. Right in the middle of these troubles, Mizuho's family concludes that the moment has come to pay them a visit. Told in a single OVA episode, the story blends comedy, romance and ecchi humor with a science fiction backdrop.