suihomicide 

(noun) the act of travelling to the past and/or a parallel universe and killing "yourself" to resolve a time paradox. However, that would cause another time paradox if done poorly. In which case, another time traveller must travel back and intervene the first time traveller.
Suihomicide is still a theoretical concept, but it could be commonplace with the invention of the time machine . . . or is it theoretical?

"The anime was weird. It started as a good ol' mindfuck and yandere anime, but then it turned into all gore and fucked-up shit. Then after the plot twist that the Yandere committed suihomicide to be with her love interest who died in the first world, it finally turned into a love story more fucked up than Romeo and Juliet."

suihomicide by cutesy pastel living doll November 15, 2014

suhomicidal 

A homicidal maniac that commits suicide after a killing spree.

Hey Bob did you hear about that suhomicidal maniac that killed 7000 people then killed himself?

suhomicidal by Mr Hotsauce May 19, 2009