With the level cap goign past 75 the effectivness of Kikoku's aftermath seems to be inferior to that of kannagi or nagi. I purpose it either changes to something different or augments subtle blows. The augment could either be Silent blows allowing a % chance to give 0 tp off a hit or maybe a cheap en spell for all i care, dmg would be based on subtle blows with armor, traits, and merits for a reasonable dot dmg.