I m trying to find this yaoi manga that I read before. It 1st chapter is as one shot mang...

I m trying to find this yaoi manga that I read before.
It 1st chapter is as one shot manga, I think 2nd or 3rd story.
The continuation of this chapter is on another manga.

There is this popular guy (rich, handsome, smart & the girls are always around him). This rich guy's parent helped a bankrupt family long time ago, when he was a kid. And now, the son of the family that his parent helped, appears, and following him around as a lackey because he wants to repay him for helping his family back then. He is delinquent with piercing and tall.
Because this rich guy wants the delinquent to stop following him, so he asked the impossible, to have sex with him. But surprisingly the delinquent agree but he fainted at the middle of sex, and the delinquent is the uke.
I remember the story title is : Lion won't bow down (or something) but I remember the Lion things.