Takeshi, who lives with his single mother, often stays over at the Aida household when his mom works late. He has long harbored feelings for Nana, and secretly cherishes the time they spend alone together before her husband returns home. One day, after Takeshi loses a big match and falls into despair, Nana suggests a game of hide-and-seek to cheer him up. They take turns being "it," running through the house together. When it's Nana's turn to be the seeker, she suddenly pulls Takeshi into a dimly lit closet to hide. Packed tightly together in the cramped, dark space, their bodies press close, heat rising between them. In that moment, a new emotion awakens deep within Takeshi.