Passionate: the Man Who Started from Suzuran and Reached the Top

There was once a legendary organization named MUGEN that dominated this neighborhood. It was precisely because of their overwhelming power that this area was able to rule. However, the Amamiya brothers did not succumb to MUGEN, and were evenly matched with MUGEN by their own strength. The two teams ultimately failed to decide the winner. However, MUGEN suddenly disbanded due to an incident, and the Amamiya brothers disappeared. (All the characters are adults and will be involved in the hot-blooded district, so the character's combat power will be slightly adjusted, not too much. The combination of movies and comics will be used, and the story will be changed. Many events will happen in advance. If you have any doubts or questions during the writing process, please ask them and I will explain them.) (It doesn't matter if you haven't read it. I will completely sort out the story line and make it comfortable to read)