I failed at my job and fled from Tokyo back to my hometown. I had no motivation for anything, spending my days like a shell of a man, just waking up and going back to sleep. The only one who paid attention to me was my niece, "Rino." Innocent and cheerful, she suggested we play hide-and-seek inside the house where we used to play as kids, hoping to cheer me up. When I found "Rino" hiding in the closet, I became aroused by her body, which had grown into that of an adult without me noticing, and we ended up having secret sex in the cramped space of the closet...