Caelum! Kurumi knew that word actually...but not in relation to the weather or atmosphere. Her brother had once gone on a random talk about his research on the constellation. Kurumi really didn't get what it looked like either, even after her brother had drawn it on a piece of paper. Others like hydra and leo were obvious, they had shape...this one was just...a chisel.

As for questions, Kurumi thought for a moment before raising her hand. "Professor, does this charm also have varying levels of strength like Protego does for different weather conditions? I mean...is there such a charm as Protego caelum totalum for example?"