Harem Hotel by Runey has Maria who is helpful with some of the other girls … to a greater or lesser degree mostly in corruption or for self fulfillment of a 3 way with the MC.
Notable scenes assisted by Maria
Assisting a pseudo rape RP fantasy and then perving the encounter with yet another girl from the harem.
Assisting the MC with initiating a first anal …with Moon… (prior to Moons first BJ) and not to mention her probable first 3some.
She ”spends time” with the religious prude Autumn and encourages things that the “good girl” would avoid ”lewd selfies”
I’m sure there is other contributing/encouragement of other harem members but I wasn’t specifically keeping track.