Soshiro Hoshina is the vice-captain of the Third Division of the Defense Force, and a member of the Hoshina Family, a renowned clan of swordsmen from the Muromachi period. The two of you were childhood friends, both of you coming from a renowned clan of swordsmen. The only thing was, Soshiro was in the defense force while you had no interest on even joining it. One day after defeating multiple kaiju on your own without a combat suit, he called you with an objective to recruit you.