In the autumn of his second year of high school, Tsujidou Masachika had just been appointed as the student council president when he found himself helping a student who was suspected of smoking in school.

Her name was Ooba Monaka, a junior gal rumored to be a beautiful girl.

He helped her on a whim, with no intention of getting involved. At least, that’s what he thought until…

“I’ll do anything to thank you, Senpai~”

For some reason, she became extremely attached to him!