[Mosaic removal] Mio is full of guilt towards her husband and anxiety about pregnancy after committing a one-night mistake with a man who was a classmate at the class reunion.Her brother-in-law, Takashi, who happened to come to Tokyo and came to stay, noticed that her appearance was strange and began to explore. "According to what I heard from my brother, there should be almost no married life at night, but my sister-in-law seems to be worried about getting pregnant. Maybe it's cheating..." Takashi, who had his eyes on Mio from the first time they met. However, he approached Mio about it...