Even after coming to Chaldea, King Gilgamesh (Caster) still has not shaken off his tendency to overwork himself.

Won't you sleep even for just a little? Or take a short break...?

Is this what they call a workaholic?

Shut up! Stop complaining about my lifestyle!

You haven't even slept yet.

I knew you'd say that!! That's why I prepared this!

Using an unfamiliar type of magic, and even an unknown monster...