He tells Kurumu about the Sex Note, and she does something surprising.

"I wonder what's gotten into me? This is so embarrassing," Kurumu giggled as she sat in her underwear before him, and Tsukane paused, before he decided to put aside his questions on Succubi and Incubi.

"Well... I got my hands on this," he replied, showing her the Sex Note, and explaining it. Kurumu listened intently as she stared at the Note. "... you're a Succubus, know anything about it?" he then asked.

She shook her head. "You would think so, but no, I am drawing a blank," she confessed. Tsukane sighed. He figured as much. "Might I take a look though?" she asked.

He paused, hesitating. "What are you up to?" Moka asked suspiciously, and Kurumu rolled her eyes.

"You think if I was going to do something nefarious, I wouldn't have done it last night after everything went down?" she asked. "I could have easily snuck in and kissed him in his sleep if I was still going to do something like that..."

Tsukane conceded the point, and handed the Note over, curious to see what Kurumu might do to test it out. Kurumu took a pen, and hesitated for a brief moment, blushing, before she decided to commit, and wrote, "Kurumu Kurono's kiss will work in reverse the next time she uses it. As in, it will make her the love **** of the male she kisses." She finished, going red. She was sure of what she wanted, Tsukane was special. Even if she had to share him with Moka, she wanted to be his...

"What did you write?" Tsukane asked, taking the Note back, but before he could read it, Kurumu wrapped her arms around his neck, and planted a kiss on his lips, much to his surprise, and Moka panicked, and pulled Kurumu off.

"Tsukane, did she-?" Moka asked, cutting herself off. Even with Moka and Kurumu being made to get along better via the Note, Moka wasn't going to allow for an "unfair" dynamic of Kurumu having Tsukane being her ****.

"...I don't think so?" Tsukane asked, not feeling any different, before he looked at the Note again, his eyes widening, before he looked at Kurumu, who was smiling as she reached behind her back, and unclipped her bra.

"I'm yours Tsukane... No matter who else you may love, I will always be one of your lovers, even if it's unorthodox for the Succubus to be the one enthralled," she crooned as she dropped her bra, exposing her boobs, getting both Tsukane and Moka to stare in amazement.