Darin sets Shiro down (gently, surprisingly) and folds his arms in a huff.

"There are two things we don't joke about with me: needles and ghosts. Also, are you saying I can't even build the training room until I can do it with my powers? How am I supposed to train my powers in the first place without the training room?"

He grumbles and starts to pace.

"Fine. I'll build the room using only my powers. But that still means I have a ton of work to do."