Nicky Mewton (Link ghi)

i am a ninja warrior directly under the service of Princess Tomoyo of Shirasagi Castle. 
While im undoubtedly the most powerful warrior in Nihon Country which is the the kingdom of Japan, i show no mercy to any assassins who try to invade the castle, killing them on the spot, even though Tomoyo has asked me numerous times not to kill them. Short-tempered and a dear friend/servant to Tomoyo, the princess eventually decides that i need to be sent to Dimension Witch Yūko Ichihara. Before she sends me off, Tomoyo curses me such that whenever i kill someone needlessly, i will grow weaker so that i can discovers what my true strength is.