Nikki is very gay but represses it incredibly well.

In post-canon, he's in a throuple with his boyfriend and girlfriend.

His relationship with his girlfriend is complex in that he has intense feelings toward her but they are neither sexual nor romantic. But he does love her.

His girlfriend and boyfriend are sexually and romantically involved.

He is sexually and romantically in love with his boyfriend.

So it's all sorts of messy fun.

So yeah Nikki does find several Seasons guys hot but he doesn't flirt or indicate he even notices.

Ayato is probably top of his list, but Rafal is also nice to look at.

good taste

He likes the pretty types.

A+