Munasawagi Karte
胸騒ぎカルテ
Mika gives a couple's ring to the person she loves, but is rejected and the ring is given to Keigo instead. The ring ends up with someone who loves her, rather than the person she is in love with. The story explores the relationship that develops between Mika and Keigo, and raises the question of whether Mika will end up with the person she loves or the one who loves her.