I'm an OT7 BTS fan however I do.admit I have a soft spot of the leader.
I've been an 아미 for about three years now(?) (forgot to keep track of time lol seems to fly by with BTS) 
Other groups I Stan: 
Got7
Ateez 
NCT 
Kard 
Lay (and still getting into EXO) 
(I'm still learning their names tho TT)

And am open to other boy groups, gorgeous haven't really caught my attention... yet