Yuki works as a "dormitory mother" at a certain school's baseball club dormitory. She used to live in a dormitory, but now there are only three members. Yuki's only source of trouble is the frequent "blackouts" these days. Every time thunder struck, the power went out in the dormitory, and the members were spending their days in fear. One day, another power outage occurs. Yuki with a flashlight comes to the club member who couldn't sleep due to bad timing.
