Ad aspera

And it's like level 3, or something else?

It's as powerful as the level 4 spell, but with more damage.
Kotori has unlocked the inn location, and you can check in there. But you can also wander around the city. It's currently about two hours until midnight.

- Damn! - throwing away the flamethrower, Karlsson comically danced in place, trying to shake off the napalm and knock it to the ground. - Oh-oh-oh! You little rascal!... It's leaking, you bastard! - he complained to the inventor.

Krait [275/475]
The alchemist on the other side of the village was busy playing dodgeball – only with fire bombs – and didn't approach Krait right away.
-- U-kha-kha, -- he started coughing again from the smoke and fire. The scientist's eyes are watering, but it's one of the most satisfied faces Krait has ever seen. -- Still alive? I need to, kha, refine this further. Is there any left?
He gently shook the jug.
-- Just a little. Kh-kh. One more jug – and we would have burned everything down, khakh.