Time to take off the Rosary!

Moke and Tsukane stood before Kurumu on school grounds, Kurumu prepared to attack them both. "... Tsukane, I know it's risky, but you have to take off my rosary," Moka informed him.

"What?" he asked, turning to look at her.

"The seal won't let me remove it myself," she explained. "But with it off, I can unleash my full vampire powers and get us out of this..."

"What do you think you're doing, talking in the middle of fighting for your lives?" Kurumu cackled, swooping down.

"Aiiee!" Tsukane cried out as he dove out of the way, her claws cutting through the trees, and toppling them. "...sheesh, those are some serious claws," he remarked, a bit nervous about this fight despite the confidence. He quickly got up and ran to Moka, grabbing the Rosary, and pulling, but despite his supernatural strength, it wasn't budging. "...what?" he asked blankly as Moka also looked in shock.

"No... The seal was too well done, even someone else can't remove it?" she panicked.

"Stupid vampire, the only thing you have going for you is strength! And your blood bag is just a burden too! Now die!" Kurumu mocked as she flew at them.

"No!" Moka shouted, holding Tsukane close. "Tsukane is my friend, it has nothing to do with his blood!" she shouted at the rapidly approaching Succubus.

"Nonsense!" Kurumu scoffed, arm drawn back for another swipe.

'...this is my fault... If I wasn't put under that spell earlier...' Tsukane thought. 'I don't want to get Moka killed because of my weakness!' He pulled at the Rosary again, and... It came off... Quite easily in fact, as if the previous resistance didn't exist. "...what? It came off? Was it because of me wanting to protect Moka with everything I had?" he wondered, holding it up, just as Kurumu was blasted back by some form of supernatural energy that erupted from Moka.

"What the!? What a powerful vortex of energy!" Kurumu cursed. Tsukane meanwhile watched transfixed as Moka's light pink hair changed, turning silver, and her green eyes turned red, with slits for pupils, and her fangs, already pronounced, grew even longer.

Inner Moka was now free to wreak some havoc.

"Hmmph! Don't mess with me!" Kurumu shouted. "True vampire or not, there's no way I will let myself lose! We Succubi seek a "destined encounter" among the men we tempt! To keep our small species from dying out, we must carefully select one man among countless to be our destined one! And you, Moka Akashiya, are in the way of that!" she declared, charging forth with her wings again.

'...is that why she's so obsessed? She feels like she can't afford competition to keep her species going?' Tsukane mentally asked.

"Hmm, so you dare bare your fangs at the likes of me?" Inner Moka mocked, taking on a tautnting stance.