Anyone know?

I forgot what it's called but it's a coloured manhwa/webtoon (?) and its shounen ai with mc slightly tanned and brunette with sharper eyes and the ml blonde and typically good looking. The backstory is that mc tried hard to glo up while ml has always been naturally good looking and charming. Mc used to be a chubby kid that he tries to hide (I think). It's rlly nice and bubbly and wholesome (from what I recall). The side story is bad up being abt mc's sister as well.