Daiichi, a second-year university student. He successfully got his first girlfriend and lost his virginity upon debuting at university, but after two years of dating, his recent problem is 'premature ejaculation'!! Is it because he had a long history of being a virgin and jerked off too much... His girlfriend even says, 'You just finish and that's it!' In the end... He consults with his childhood friend Mina about this. A mischievous childhood friend who plays with Daiichi's ejaculation control under the pretense of improving premature ejaculation!
