i need to know this T^T

It’s a manga I think, and it’s about two boys, I think they’re having a drinking party or just a party, I can’t remember if they’re underaged or not, so anyways they’re competing to see who is the most attractive by doing something but they end up falling in love with each other and I remember there was a lot of other characters and the ending was where one was wearing a crown. I'm not 100% sure if I'm confusing this part with another manga but I think they have open sex at a bar and another guy sees them and jerks of too it