He decides to consider her first suggestion!

"...um... So... That ghoulification thing sounds a bit sketchy..." Tsukane noted, moaning as Outer Moka managed to get him fully hard again, before sitting back and awaiting further instructions.

"...well, it's only temporary with each infusion... And there may be a risk with repeated transfusions..." Inner Moka said slowly. "I was only thinking one or two until you decided on doing something to gain some kind of monster abilities..."

Tsukane shivered. "Yeah, let's not get into that... Hmmm, but is it possible to give me monster abilities without actually making me a monster?"

"Hmm, I suppose that's doable with my genie magic," Inner Moka mused. "Your soul and DNA could still be that of a human's, but you would have the supernatural abilities of whatever monster you went with, and able to pass as it. And the ability to take their form, but it would be more of a "disguise" than your true form..."

Tsukane actually chuckled a bit. "So... Like everyone else here is a monster with a human form, I'd be the opposite? A human with a monster form?"

Inner Moka laughed a bit as well. "Yes, the irony is amusing..." she confessed. "It would be functionally the same, but fundamentally different. Of course, there would have to be some kind of sexual connotation behind the wish, given the restrictions of my powers, so it should be a monster that would be sexualized, at least a little..."

Tsukane considered, not making a decision to go this route yet, but considering his options. "What monsters would you suggest?"

"Hmm... Well, an Incubus would be easiest with the restrictions of my power, for obvious reasons. And it's a good option, while they can't compare to Vampires in a straight up fight, they are still high tier with a good set of abilities. Though, explaining it might be tricky, they're supposed to be extinct, but you could include a plausible cover story in the wish. You could also just take vampire powers instead, but I'm sure any actual vampire worth their salt would be able to tell the difference, however subtle, and you wouldn't be able to avoid them forever. Perhaps a Warlock, the male version of a witch... They're essentially human, but part of monster society, if a bit discriminated against like witches. They'd have spells you could use for sexual purposes, but given you have Sex Genies, a bit pointless. Or if you wanted to keep it more simple, perhaps a Neko like our teacher obviously is," Inner Moka ticked off. "Lots of options, really."