A Couple of Cuckoos 12

What was the truth behind Sachi’s surprise kiss? Nagi is finally back in the Ama-Umi House, but he’s finding it hard to look Sachi in the eye… Can they no longer go back to being friendly siblings? On top of that, when Nagi returns to school, he finds out he’s been chosen to represent his class in the “M-1” competition, the centerpiece of the school culture festival. Apparently, legend has it that the winning pair ends up married…!!