First time falling in love, a Yakuza higher up (ML) lived a dull life, blindly following his grandpa's wish, the 'obedient' child (unlike his brother). But then he met with the MC, a normal drunk guy who says he will introduce love to ML's life. It gave ML a new spark to life. He is so in love with the MC, even though it was one sided at first, now MC also have feelings towards ML.
How To Break Up With Him.