Hi,
I've been wondering... the enhancement effect reduces incoming damage by 2 per kept die containing an [explosive success] symbol... but I am not sure on which check. Is it on the Kiho activation check (thus at the activator's discretion) or on the attack roll (then, you basically dis-incentivize the attacker to keep exploding successes, but they can chose not to keep them and avoid the reduced damage)? I am reading and re-reading the description but I cannot make up my mind...