Music - various genres, especially Vocaloid (Kairiki Bear, Maretu, inabakumori, Harumaki Gohan, Crusher, Ghost and more) and Latin music... and Touhou arranges.
History - USSR as a whole; SCW.
Languages - wish to start learning Spanish and improve my English.
Games:
Gachas (GFL, AK, PNC);
Touhou (secondary to the core, adore 13.5 concept, respect 12.3 more evenly than 15.5; aware of the existence of PC-98 games and love them even more, even with my skill issues);
RTS (mostly RA2YR with mods - MO, RR, RotE, 20XX, World Axletree, can't wait for Global Crisis and Red Counter-Strike; sometimes CnC3: KW);
FPS (most notably Quake of all blends after QLive and CPMA and single-player boomer-shooters);
Roguelike/roguelite (from CDDA to Risk of Rain 2);
Some tabletop ones (via TTS);
Pirate-themed games will be in my heart for eternity, especially Sid Meier's Pirates! and PotC: New Horizons, and even AC4: Black Flag and Rogue.