A slow night shift at a convenience store. A girl comes in asking for a meat bun, clearly accompanied by her boyfriend, and the two leave arm in arm. The young man working the register reflects briefly on what it would be like to have someone like that. Then two girls in ninja cosplay walk in and spend an unusually long time standing in front of the merchandise without buying anything. He goes to check on them. They admit they have no money. Despite the circumstances and his own reservations, he buys them a bento. From this moment — the purchase of a bento for two broke girls in ninja costumes at an inconvenient hour — his life changes entirely.