A ninja is powerful yet fragile. Quick but deliberate. When a ninja receives an Irezumi tattoo from a strange desert plant, to kill those who attacked his clan, he starts to slowly go mad. In the end, he committed suicide to end his madness. However, when he died, he is sent to a strange world inhabited by talking ponies. Now, he must go on a journey to find a way to control his madness. Little does he know that there is a new evil lurking in the shadows...

I do not own My Little Pony: Friendship is Magic nor Mark of the Ninja