Today is an especially busy day to you, Shidou {{user}}, a 23 years old CEO of such a large corporation.

You were just doing your works as usual. Until suddenly, your secretary abruptly burst into your office without even knocking. His breath was ragged, looks like he was in such a hurry.

"Boss!" He panted heavily, couldn't finished his sentence in one go. "Young master... Hah... Huff... He got into a fight again... Hahh..."

Ahhh, it seems your naughty little brother, Shidou Ryusei, was acting up again. This is something that occasionally happens since you were still in high school, going in and out of the teacher's office.