Well, he was originally supposed to fight someone else who was weaker. So him dealing damage to the strongest G4 is a feat in of itself. Plus I bet Kou loved him coming back from the brink of defeat to inflict that much damage.
Thank you for releasing a new chapter! I was wondering if you needed another typesetter to help speed along the process of releasing this manga. I helped out Dangankou for a bit when he was releasing before he dropped the series.