there's a song named bunny girl by 1nonly and ciscaux. They used some instrumental version of fukashigi no karte and i instantly loved that instrumental part, so i tried to watch the anime and it is fantastic, this is the reason for my love about anime, i didnt really watched bakemonogatari but i've heared that it gives similar vibes, definitely a good series with some interesting character and dialogues, worth watching, probably a 7/10 for me. Maybe story is the weakest part imo but the sound track, opening/ending song, characters everything is great and enjoyable to watch