He used to be friends with Dr. Ein, but when they both fell for White Bomber's grandmother, Momo, they began trying to impress her. In the end, they both decided to ask her out on a date at the same time and see who she went out with, but Momo didn't; instead she chose an entirely different man, who later would become White Bomber's grandfather. The two thought she chose the other one and became rivals. The misunderstanding was not cleared up until Mighty, White Bomber's brother, explained what had happened to Dr. Ein. Bagura, unfortunately, did not believe this until the end of the anime where the two made up again. The battle started again when Bagura tripped up and Momo gave him her handkerchief, and when Dr. Ein realized this, he threw his drink into Bagura's face.