why his uncle look young af like he could be his baby brother what kinda BL logic is that

Seems like the uncle was a teen when he was a kid so I guess the uncle’s sister/brother had a kid (the villain) when they were young and have an age gap with the uncle
It can happen easily if you have like 10 year age gap between siblings

yeahhh makes sense it's just funny how he's like hey uncle and then the uncle is just a little boy lmao