TheBlank

I don't think that it is something new. I seem to remember that he also have a third eye when he went berserk in the earlier chapters. that time when he first encounter David when he is recuing Leo. It may be what he inherited from his mother? Probably? From what we have seen, everything that is related to Martial Arts is from his father while the Mentalism Arts are from his mother? At least, that is what I think.

I also think so,

Take that, MFR!

Arthur and Leonard really like to play things in 'low profile' manner.

I just got back and greeted by this heat, Let's go!!!!

Trying to play tricks on me? Thing again, buddy.

Boom!

We finally got to see this skill and action. And as expected, it is practically OP.

Early?

Hahaha, I see that Arthur have a lot of free time to do a lot of stuffs of course, only about the game .