Scum's Wish

Hanabi has been in love with her older brother's friend, Narumi, since she was small. Mugi has been in love with his middle-school teacher Akane since she was his middle-school teacher. Narumi has just taken a job at Hanabi's high school. Akane has just taken one too. Hanabi and Mugi notice each other noticing them, and agree to date — not to fall in love, but to give each other a body that is willing to stand in for the unavailable one. The series is the year they keep that arrangement, and the cost of pretending none of the people involved are actually being looked at.