It seems to for Kurumu

"I'm a succubus! I'll never lose in a battle of sex appeal with a mere vampire!" She huffed, bouncing her chest up for the hallway to see. Moka had to admit, they were big - a couple centimeters bigger than her current size, she had to admit, though Inner's chest surpassed that. She'd definitely be a good member for Taukane's harem.

"Moka!" Tsukane's voice carried down the hallway, getting both girls attention as he turned a corner. "Oh, here you are. Sorry I'm late, it was hard to track down what I need in the lib-"

"OOOH! It's my hero! Kurumu suddenly shouted, leaping boobs first onto Tsukane's chest. "How can I ever thank you!?" She began rubbing her breasts into him earnestly.

"Ah! Uh, hello, Kurumu." He greeted her as he put an arm around her. A sudden instinct made him look at Moka, worrying if she was mad. in hindsight, she obviously wouldn't be as a sex genie. but he'd read enough manga to give him some expectations of jealousy in romantic relationships. To his surprise, not only was she smiling, she was mouthing something to him again - that time in middle school learning how to read lips was paying off!

'Play along.' The vampire mouthed to him with a quick wink before she started shouting. "No Tsukane! She's tricking you! She isn't really nice! Get away!" Tsukane could feel Kurumu tense up in his arms before she responded, turning to face Moka. "...Wh-why...? Why is she saying such t-terrible things?" The succubus put on her best scared stutter before falling into Tsukane again. "Oooh, another fainting spell! Tsukane, catch me~!"

"K-Kurumu?" He helped grab her, hoping to God his acting skills weren't Tommy Wiseau levels of bad. (50 billion cookies if you can track down the full reference!) The moment he and Kurumu's eyes met, he could feel her casting charm on him again. Managing to negate it, he was grateful for Moka's next cue. "Please believe me... She's going to devour you, Tsukane!"

"Devour me? You're the one who drinks my blood, Moka!" Moka suddenly looked tearful and turned to run. Tsukane thought he'd overdid it, but realized it was still part of her plan when he caught a brief glimpse of her grin as she ran off. He then began moving with Kurumu to the nurse's office. It seemed like Kurumu hadn't caught on. Tsukane was glad he'd figured out what to say, given Moka hadn't drank his blood since the geniefication (was that a word? whatever, it worked for him.) He just had to hope that Moka's plan would work out in the infirmary.