Kamen Rider Buster

In the first chapter, Ryo Ogami is an old-fashioned but powerful brawler living a high school life, alongside his childhood friend and student council president Haruka Kiritani, who he is in love with. One day when buying his favorite soda from a vending machine, he finds a mysterious item under it, a Wonder Ride Book by the name of "Genbu Shinwa"...