It's not just you. But this is one of the only ones that actually deal with that issue somewhat appropriately imo, with Hanjoo being quite uncomfortable with the whole situation. And it's usually the other way around too, it's more morally 'acceptable' if the younger person is the one who's had feelings and not the grown up. So yes, it is pretty uncomfy, even with the moral 'loophole' of Kiwon being immortal and Hanjoo a reincarnation

Its not a pedo situation but top know uke since baby. Its not wrong but I just find it unsettling..or maybe it just me, okay. But there are a lot of bl that same situation like this...like Miscreants and mayhem