Husband Kenichi and wife Misaki, whose parents moved to Singapore and returned to their parents' home where their brother-in-law, Kenji, lives alone. The three of them were happy to see their family again after a long time, but Kenji was the only one who was excited in a completely different way. He's been obsessed with capes like a stalker, stealing underwear and sanitary products for his collection! One day, something incredible happened. While cleaning Kenji's room, Misaki finds the collection...
