Kai was living a peaceful and secluded life with his special martial arts teacher Gankutsuo, until the day he rescued a beautiful girl, Lee Shuurei, who was tumbling down a waterfall. He has no idea what she means when she asks about a "Tenraimon", but Kai is soon drawn into her problems when her pursuers arrive. Meeting her will change the course of Kai's life!

Meat, trainer to the great Choujin superhero Kinnikuman.He thought his job was done helping his greatest subject become a master Choujin and king of his homeworld. But...what if upon waiting for his next subject,the little trainer was sent to another world... where Kinnikuman has yet to become a great hero yet... and is...female!? Welcome to the world of Kinnikuman Lady!