"Nope." Her hand shot out and grabbed the collar of Akira's hoodie. The frown was gone. A smile was back on Mitsuki's face. "Don't think you can hop out of this one!"

That was when she began to drag him. Began to try to drag him. There was a weight difference there. Also a height difference. They did not get very far. Not even past the one biker guy at the entrance who had been asking Haruka about something or other.

If she was thinking about this - and thinking was boring most of the time - she was a little irritated. Exploring was supposed to be fun. The old building was forbidden and spooky and she had been doing this all for kicks. But now it looked like they actually had a reason to do this and stuff to do. The message had not even explained how to disconnect these worlds. Just wanted them to do it. Like they were some sort of heroes.

If anyone was trying to be heroes, it was probably Haruka's group. Which made Mitsuki blink when Haruka ran off in tears into the darkness.

She let go of Akira's collar.

"Guess we're splitting up... Anyway, you're a upperclassman and you're supposed to watch over the underclassmen, so you're kinda responsible for following me and making sure I don't do stupid stuff." She bobbed on the balls of her feet. "So! Guess you're stuck with me, bunny-senpai." 

She did not like hierarchies. But she knew when they could be used to her benefit.

... Also, had that Rika girl called him Akira-kun?