One summer day. Hikari, who lives on the same floor, stood in the hallway with a puzzled look. It seems like the fan wasn't working properly when I greeted her. Look at me. She took it with a gentle heart, with kind intentions. Thinking about it, her husband was working far away, in a hot and humid dorm room. Hikari-san's exposed chest. The strangely erotic dripping sweat... I had strange expectations.