If Kikuchiyo reaches his Kiai value, he is allowed to discard/defeat the last raider from any combat line (even his own). If he does discard the last raider of his own combat line, his Kiai value will drop.
My question: is the first raider in the combat line discarded as well (as per the Kiai rules?)? Or if you use his Kiai talent on himself, does the first raider stay?
In other words: does the Kiai value drop immediately after discarding 1 raider or can Kikuchiyo discard 2 raiders (first and last) and then adjust his Kiai value?