The ruby-eyed hero

Akihito Fukuouji wanted nothing more than a son to take over the Fukuouji family company in the future, but with his luck, he only had useless girls. When he found out that his fourth child would also be a girl, he took his third-born child and chopped off her hair, forcing her to become a boy. Now forced To be a boy and erased of her past identity, also now know as Smeraldo,she, or should I say,he, does whatever he wants after all,who's to tell him no he is the heir to the Fukuouji company, for example like joining the Tokyo Manji Gang after all "Father and Mother, it's what boys do,and I am a boy after all."