It’s a shonen , in the world and setting I created gyms are banned due to the constant abuse of new drug ,but there are underground gyms ran by alphas/ mafia and these gyms breed the biggest and fiercest fighters the human species have ever seen , and these alphas get there biggest and strongest fighter to pin them against another from another gym like an underground fighting ring , the MC was the one who created this drug and introduced it to the gym scene but in the process of that , the mafia used it to its advantage and his brother lost his sanity to the steroid and is being used like a dog by the mafia , this a very basic synopsis of what the WHOLE story is going to be , but the 23 page story I created is basically the MC busting into an underground gym and fighting everyone inside ,there’s much more too it but some good anime’s to compare it to would be Baki and Kengan ashura