Mitsuru taking action

(Chapter originally by Phantom Pen on writing.com)

As one of Minako's hands left her thighs, beginning to journey up to her chest, she was both surprised and infinitely thankful to find her wandering hand suddenly held firm by Mitsuru!

"Arisato! What in the world are you doing?!" Mitsuru hissed, keeping her voice low to avoid attracting attention. "Where are your clothes?!"

Minako wanted to say "I don't know!" or "Mitsuru, help! I can't control myself!", or anything else to plead with her friend for assistance. Unfortunately, Minako still couldn't exert any control over her own vocal chords. As such, the naked girl was disturbingly quiet as her hand being held by Mitsuru suddenly grasped the redhead's hand gently, stroking it with her thumb. Meanwhile, Minako's free hand moved further up her thigh, meeting the junction between her legs.

"Enjoying the show, senpai?" Minako asked, shocking both herself and Mitsuru with the words that came out of her mouth. "It's so dark and loud in here, I bet I could do almost anything back here!"

"Arisato! Cease this foolishness immediately!" Mitsuru snapped back, trying to pull her hand out of Minako's, only to find the other girl's grip much stronger than she had anticipated.

"And ruin the fun?" Minako replied. "Senpai, I really think it's time you lightened up a bit. Cut loose!"

With that, Minako and Mitsuru were both taken by complete surprise as Minako-