After saving the world from an alien invasion, Takashi Shiwensaki, a rare hero, longs for a normal high school life. Finally free from the war, he returns home to Japan to fulfill this long-held dream. However, his desire for tranquility is tested when Natalie, a Scandinavian war comrade, moves in with him, claiming it's to "live together." Takashi, the most powerful of the returning soldiers, seeks to escape love and conflict. Will he find the peace he so desperately craves?