Yoshiharu, a young gang leader known as the omega, finds himself thrust into an arranged marriage by his superior to an alpha from a rival clan. Reluctant and resistant, Yoshiharu's intended mate takes drastic measures by drugging him to trigger his heat. Saved from this situation by his loyal comrade Makoto, Yoshiharu realizes that Makoto is actually his fated partner. Grateful to have someone he can rely on, Yoshiharu is surprised when Makoto hesitates to take their relationship to the next level, leaving their future uncertain.