This is going to sound random, but I wish I could talk to the folks at Arc System Works about Akihiko's fighting stage/style. His design, in particular his animations are very similar to the fighting style of martial artist named Wanderlei Silva that was really popular in Japan in the early to mid 2000's.
It's like how the P-1 Grand Prix in Arena seems like a tip of the cap to the K-1 Grand Prix, K-1 being a really popular kickboxing organization in Japan. The opening to Arena
with all the characters standing on the stage with the pyrotechnics going off looks exactly like one of the o
ld Pride Grand Prix openings.
Pardon my random martial arts injection.