The only place in a world where monsters appear and the climate changes rapidly, the "special city" that maintains the shape of the state. There is a notorious Esper unit "White Army" that is dispatched when it kills monsters and absorbs external populations. Shinhwa-jin, Baek's Esper, is neglected because of her background and weak ability. When he hears that his twin brother, a guide, was exploited and killed by his team members one day, he runs away from the cliff after exterminating the team at the risk of a runaway. However, when I opened my eyes, I found that the place where he is is the 'library', a village where he lives in hiding from the special city. It was Tan, the man in charge of the library, who saved Shin from losing his memory due to the impact of suicide. Tan, who lost his home and family due to the attack by Baek, dislikes the man who writes poetry, but gives him the name "Hima" when he loses his memory and is na순진ve. Hima, who is close to Tan and has deeper heart and contact, is gradually regaining his original ability....