the only male Saiyan ( male Saiyan reader x Boku no Hero &DBuniverse harem)

Earth where all people lived together in armony and peace, but some idiot gather all Seven dragón balls,summon Shenron and you Wanna know it's wish?: erase all boys on earth and almost every boy when Thanos style except 1 which that they hate and it's name Is Y/n a fat Saiyan who was bully for weeks, Little did the girls know Is that Lets just say training pays off the problems making him the strongets male Saiyan on earth, he train and train to perfect His skills and also body completly.

now the girls can now have a chance to re-populate with one boy Saiyan and won't be Easy to get him and crazy Shit when down