Carlnil

A demon shota who is slightly shorter than Itsuki.

He's an executive who was ordered to capture a provincial city. He possesses wisdom and power, and has a ruthless and brutal personality. Contrary to his appearance, he seems to have a lot of life experience, but sometimes gets childishly violent.

He's hoping that the appearance of the Battle Flyer will make things a little more interesting. Depending on how it unfolds, Itsuki ends up going through some pretty rough times.