Peak/Boom would seem ok if they were romantically involved but the others' age differences irl would be a bit unsettling to me - Ohm is 16 while Toey is 20, Beam is 15 and Bonne is 22, Nice is 15 and Aof is 20? The difference wouldn't matter so much if they were all in their 20s or something because they're life experiences/maturity levels/freedom would be a lot more equal. I remember back when my cousin was 15 (and skinny and really baby faced??) and she told me she was seeing a 20-21 years old guy (they dated several years but eventually broke up last year) - I immediately went into angry protective mom mode (I'm older than her by 2 years) and told her if he did anything stupid I'd kick his ass of this planet lmao. I'd be "oh hell no" if I had 16y.o. kid who was being pursued by a 20 y.o. (same if i had a 20 y.o. son who was flirting with a 16y.o. girl/boy).
And omg SK/Seoul? I'm jealous. I wish I could travel but I'm in a place in my life right now where I'm struggling for a job and I have to save most of my money so I can't really travel very far.