Here are the possible solutions for cain killed him clue
Answer
Clue
Relevancy
abel
Clue
Cain killed him
Killed by Cain
Cain slew him
Cain murdered him
Cain was jealous of him
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"
niobe
Clue
Apollo killed her sons and Artemis killed her daughters