Summary
“You don’t want your mother to see this” video “, do you? Then…” It was a one-time mistake… should be. Why am I being threatened by my younger brother?! Hana, an honor student, dreamed of a happy married life while harboring a faint crush on her senior colleague. But sometimes, the memories in Hana’s heart cast dark shadows. Five years ago, from that day when my brother-in-law Haruma had the face of a man… Since then, Hana has been avoiding Haruma, but after visiting his apartment, the gears of destiny begin to go out of order. Older sister Hana, who always thinks it’s the last time, keeps overlapping with her younger brother Haruma. And what is the “promise of the past” that Haruma clings to? Distorted forbidden love between an honor student sister and a brother-in-law who keeps thinking about her sister!