Jumping on the bandwagon. Here's a few things that I can't do without:

Splatoon
初音ミク (Hatsune Miku)
Genshin Impact
2000s JPOP (Think 浜崎あゆみ、椎名林檎、綾香 and YUI)
Cute things
Low poly 3D art
Jungian Psychology
Existentialism
Purple
Cyberpunk scifi
Lo-fi hiphop
House music
Absurdism

That's about it