The line of girls moves slowly down Kana's back, each pressing their noses against the warm flesh in turn. Some giggle nervously while others try to hide their faces from embarrassment. After what seems like an eternity, they reach the end and everyone looks expectantly at you for your decision.

You take a step forward, admiring Kana's ass as she stands before you, flushed with both arousal and shame. "I must say," you begin, "Kana does have quite an impressive ass."

"But," you continue, raising your eyebrow suggestively, "perhaps there's someone else here who has just as good of an ass... or even better?" You give a meaningful look to Yuki and Himari, who blush deeply at the implication. They exchange guilty glances before tensing up in anticipation.

"So," you say finally, "why don't we have a little contest? A wrestling match between Kana and... whoever feels brave enough to challenge her?"