I don't think Ares is all that happy go lucky. He's had it pretty hard, and luckily for him, though cliche, he can't remember any of it. He's got a darker side too (yeah, a little like Kenshin) he got pretty depressed when he thought Ariadne abandoned him and very angry when he met the red-eyed swordsman again.

Anywho...chapter 55 is out.