this took so long to answer because i had to genuinely ponder this for so long. because like. how do we define sluttiness. sexual promiscuity? i have SO many like that. sexual partner amount? how horny they are in daily life? so much variety. i ended up settling on a top 5 of who fulfills most of those 3 things an equal amount.

1. abyad - abyad thinks hes literally only good for sex and sooooo mentally unwell. horny on main 24/7 and crumbles into dust if he doesnt get to rail or get railed every 24 hours. get him help
2. shouko - literally a cum stealing witch im not fucking joking. its basically like a fucked up stem cell alternative to make reviving potions though bcs shes terribly thanatophobic.
3. adam - wolfboy whos more like a kicked puppy and also a serial killer? something wrong with him. so so horny despite being a virgin before his current partner so he gets in here
4. celeste - womans literally a sex therapist this is just her Thing. MALPRACTICE !
5. aja - local idol boy with beautiful princess disorder who crumbles if he doesnt have a crush to romanticize rn. the romance part includes sex so hes pretty horny too