>>83432457That's the domain of /asmr/. There's a bunch of nip chuuba studios that specialize in it like emoecchi, kemomimi refle and pinkpunkpro. You can expect masturbation with live2d, asmr or just mahjong with a vibrator(on YT), etc..
On the EN side, besides the ones named before, I can only remember YFUbaby, but there's a fuckton more.