I Am Invincible, You Can Do Whatever You Want

The protagonist is a nanny mother. After more than ten years of working as a killer, she was eaten by a dog. His sister is also a disgusting thing. She uses the weapons and resources given by the protagonist, and her life is saved by the protagonist. She is ungrateful. She even tricked the protagonist into giving resources to her bullshit best friends. Are they also relatives? It's like this kind of family member just picked up a knife and chopped it up for him. The protagonist doesn't have any autonomy at all. He clearly said that women are devils. Hehe, he gave away the resources after seeing the woman crying. I want to say that you have been a killer for more than ten years and fed dogs?