calypso BJ, luna full sex, penny bdsm(probably shibari), Nancy+??? threesome
my predictions for next chapter

i cant pinpoint who the second person might be but i think another nancy threesome is coming next chapter to fit the narrative of her preparing the girls for harem (so whoever it is will be someone more difficult to convince for harem idea) and then future chapters will deliver on Luna&Annie, Penny&Nova and Alex&Daliah.
in fact, now that i think about it, maybe ??? in my prediction is penny as scenes transition from solo penny to threesome by nancy interupting (the choice from chapter 1 and locked door might become relevant)