Get Eva to tickle her.

"You'll go easy on me, right? We've been together for so long. Remember all the good times!" Niki begs.

"Hey, Eva. Can you do something for me? I dare Niki to let Eva tickle her for thirty seconds."

"Excuse me?!" she replies. "What kind of perverted dare is that? I--Wait a minute. My hands are still stuck. Let me out, Delphi! It's already the next turn. You gotta free my hands now."

Delphi shrugs. "I don't think I have to do anything."

Niki clenches her teeth. "This is unfair... Fine. Just do it already."

"Where am I supposed to tickle?" Eva asks.

"Anywhere you want," you reply.

She crawls over to the helpless warrior and brings up her fingers. Niki looks incredibly worried. As her hands make contact with her stomach, she whimpers. Eva's gentle brushing of her fingers over her athletic figure causes it to quiver. Behind pursed lips is a fit of laughter trying to escape. She then starts running her fingers down her sides--pushing into her soft flesh. Her body quickly starts to twitch and spasm as she's tickled, and there's nothing she can do to cover her jiggling bust. Eva's hands start exploring up and down, and as she becomes more adventurous, Niki begins to laugh out loud, though mixed within are embarrassing sounds of pleasure.

"N-No stop~!" Niki begs. "Not there! Aahaha!"

"This is fun..." Eva grins. Fifteen seconds have passed already. Now, a spark of mischief shines in her eyes. She moves her wiggly fingers over her tits and begins tickling all around her stiffened nipples.

"Nooo~!" Tears form in Niki's eyes but a large smile remains present across her face. She yanks on her bindings but Delphi's magic is too strong. She tightly squeezes her thighs together, and between her laughing and moaning, she heavily pants. Sweat begins dripping down her forehead.

"Twenty seconds," you say.

"I c-can't... I'm... I'm gonna..." Niki can barely speak. She squeezes her teeth together as she holds it in as best she can.

"Armpits!" Eva shouts as she forces her fingers beneath the girl's arms.

"Stop, please!" She laughs maniacally.

Eva pushes her down onto the ground--nightgown loosely draping off her curvy figure. She relentlessly tickles the other girl, though as time nears its end, you raise up a hand.

"Thirty."

When Eva stops, Niki takes gasping breaths. She trembles back up to sit, but her gaze suggests her mind is elsewhere.

"Aw. She didn't cum," Delphi says quietly.

Niki shivers. "Can... Can I have my hands back now?"

"Oh fine." With a snap of her fingers, the rope disappears.

Quickly, Niki covers herself up once again.