Responses
I wish he could but if I remember correctly, Arthur lost both his arms. Like they're not there anymore ╥﹏╥
i mean if u think about it... he's a mad scientist so he can basically fuse the veins arthur has left from his upper arm to the prosthetics and perhaps make them durable enough to handle his awakened power
I hope jiwoo can mention Dr delein to check his arm, it doesn't have to be Kartein.