kazuichi- closeted bisexual (no lean)
gundham- pansexual
nagito- gay
hajime- bisexual (female lean)
imposter- pansexual
teruteru- bisexual (no lean)
fuyuhiko- straight
nekomaru- gay (i also believe he is written as a gay asian stereotype in game so maybe canon??)
peko- straight/bisexual
akane- bisexual (no lean)
sonia- questioning/straight
chiaki- pansexual
mahiru- lesbian
hiyoko- lesbian
mikan- straight
ibuki- bisexual (female lean)