Akane Sawai becomes a hikikomori due to depression; she only interacts with her textmate, whom she met online. Her concerned teacher, Yoshiki Fukasawa, constantly visits her to try to convince her to return to school. Akane gets irritated by this and decides to send Fukasawa to Hell but later finds out her textmate is Fukasawa. They are both depressed and tired of life. Looking for an end, Fukasawa convinces Akane to send him to Hell. In Hell, when Fukasawa learns Akane will also go to Hell when she dies, he feels regret but hears Akane, who is strangely at peace with the idea of going there, tell him to wait for her.