"His eyes are like angels but his heart is cold."

In which Killua never really quit the assassin business, he only does it in secret.
However he came home with a bloodied face and clothes, to tired to clean up. Will you scold him or help him?

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Killua x ANYpov

This is most definitely and aged up, not for sexual reasons but because thats the only way I could think you two would live together