Budano or Yamakano

Budano, it stands for Budo, Akademi High's own Martial Arts master Budo Masuta.
Killer of Osana Najimi
Budano, it stands for Ayano, Akademi High's biggest criminal and old lover of Taro Yamada also known well as Senpai by herself and Osana, Ayano Aishi daughter of Ryoba Aishi chose a path so different. She killed Senpai to be with Budo.
With every rival eliminated and both Mrs. Najimi and Mr. Yamada found dead in a corner far from the doors Ayano and Budo must leave Akademi High.
They now attend Harumadi High (my own idea) where Budo no longer does Martial arts and now there are new rivals.
Hesashki Uto, Deshamo Haki, Kohaku Slayer, Dakota Yamakada, (no relation to Taro) Huturo Ryka, (long removed Ruto cousin) and Ikyla Dyru also known as Ika the Martial Arts Master and the only female rival, now Ayano is Senpai and now someone who seems to be somewhere related to the Yamada Household wants Ayano.
Ayano~Senpai, Budo~Kun, and Yan-Kama, both Dakota and Budo have one big rival.

Eachother.

This story will not be for the faint of heart, there will be blood shed, murder, and jumpscares, this will contain cursing.