"I really doubt you could lift three people. We're not that light you know." Plus Koishi still was just a little kid. Even Yang couldn't be sure she'd be able to do that, as moot a point as it was right now.

The main problem is that winding around her, there were two hands on her shoulders already so...what was coiling around her?! "H-hey! What are you doing!?" If you're wanting her to hold still, you might want to reassure her of what's going on. Winding, coiling tentacle-like things are not in her plan on being lifted up and carried down.

And now she's being carried down. Okay...clinging to Koishi's arms now. "Uh...just...go slow okay?" Being carried by a somewhat unknown person who can apparently use tendrils of some kind. Right...That's perfectly fine right?

Maybe she should have used the harness instead.