I understand (Patreon)

To be honest, I have read many comments about his lack of ruthlessness and cockblock moments when he is about to kill someone. I know that you hate me for this, but this is the end as he has the last key (his rewards) so he can achieve his peaceful life, killing all the troubles in his life without being known by anyone. 

Anyway, please enjoy it since it will be the start of his killing spree.