A couple who are childhood friends, Rei and Philosophy. It's been five years since they got married, and they've remained as friendly as ever, but this summer, Philosopher's affair is discovered. Having a child did not go well, and Rei fell into the depths of despair. At that time, Dango, the father of philosophy, comes to stay at her house while on a business trip to Tokyo. Rei is reunited with Dango, who has been kind to her since she lived in her hometown, and she becomes attracted to him. Rei realizes that she has been subtly seducing Dango, so she makes up her mind and heads to Dango's house...
