HELP

please someone help me find this bl manhwa, i read this awhile ago and i want to pick it up again i just forgot the name. my memory is so fuzzy so please bear w me—i’m not sure but the title has the word “villain” in it (?). the ml has blond hair and as far as i can remember the mc and ml are exes, mc has a mission and ml was kind of like getting on his way, and there was like this big ass mascot following mc around when he was confined in a hospital. ml was flirty asf and there was this one scene that i remember when they were on a plane of some sort. that's the only thing my brain cells could think of so please help me out.