That's one of my fav and I don't think their relationship is toxic at all, main couple started as a fuck buddies and mc had a unrequited love for his best friend (ml already knew it but he doesn't care and chased after mc but ppl got mad at mc for hurting the ml) but it seemed like mc used ml to forget about his crush so ppl called him red flag (and yes he is) but after that mc genuinely fell in love with ml and their relationship is really healthy they love each other so much I don't get why ppl hate that manhwa so much but I've read it for multiple times

i know lucky paradise for a long time but never read it because my friend said that the couple was toxic, but i saw a fun panel of it on x that i lowkey want to read it. is it really toxic?