Yoshino Somei, a seemingly ordinary high school student, is thrust into a tumultuous world as the granddaughter of the Osaka-based Somei Group's leader, a prominent yakuza organization in the Kansai region. Upon learning of an impending union between the rival syndicates of Kansai and Kanto, the Somei and Miyama groups, Yoshino finds herself at the center of it all—destined to marry Kirishima Miyama, her counterpart from Tokyo. Despite her reluctance, Yoshino is drawn into a whirlwind of events and eventually relocates to Tokyo, where she resides with the Miyama group. As she grapples with the challenges of fitting into this new environment, Yoshino faces hostility from Kirishima's admirers, leading to bullying and social ostracism. Moreover, she discovers that Kirishima's affable demeanor masks his true identity as a yakuza heir, complicating their budding relationship. 'Raise wa Tanin ga Ii' delves into Yoshino's journey as she navigates the treacherous underworld of Tokyo, a realm she had hoped to escape but finds herself entangled in once again.