Making them go full on lesbian.

As Tsukane made them continue to make out with one another, he considered his next move, before pulling them apart. Yukari turned a pouting face towards him while Kurumu was momentarily still kissing, before realizing her body was for the moment back under her control, and she ceased, blushing heavily.

Yukari noticed and giggled. "A little slow, aren't you?"

"Like, shut it," Kurumu huffed, blushing heavily.

"Now now girls, be nice," he grinned, putting Kurumu's doll on its back, and Kurumu yelped as her body moved to mimic the doll. He then put Yukari's on top of Kurumu's, belly down, and facing the other way.

"Eep!" Yukari protested a bit and blushing heavily as she climbed in top of Kurumu, her pussy positioned at Kurumu's face, and Yukari looking at Kurumu's snatch herself. "...wait, don't tell me..." she mildly protested, and Tsukane grinned as he simply pushed the heads of the dolls forward a bit, and the two immediately started to eat each other out.

Tsukane then left the dolls aside, locking them in their current situation of 69ing each other and chuckled as he took his homework, and started doing it, a mischievous look on his face as he watched the girls helplessly pleasuring each other.

"This is your fault," Yukari whined between licks as she realized what Tsukane was doing.

"Like, you're the one who started our little feud," Kurumu giggled, not minding quite as much, even if she would have preferred to be doing this sort of thing with Moka.