Spoiler for RAW vol. 4:
I thought Tatsumi was very powerful when he beat the sadist devil child who used flute with that armor. But then there's another guy with the prototype armor of his imperial gear who beat him.
The villainess is very hot though. Kind of weird she fell in love with Tatsumi after seeing his smiling face (despite the fact that she's a cold-blooded murderer who froze over 400,000 people to dead). This manga is kind of weird. I still want to know what will happen next though.