Looking for the name of this manga that I read only the first 2(?) chapters awhile ago. It goes something like this
>MC was sent to prison for killing the person who raped his sister, eventually leading to her killing herself later
>when he's out of prison, he came to live with his mom, who is now somekind of caretaker for orphans
>the feMC is the kid that's living with his mother. she turned out to be the child of the person whom MC killed, and she was there to witness everything
>MC feeling guilty, and is now left wondering if the girl is planning on taking revenge
There was some details about visiting the grave of MC's sister and her rapist but I don't remember it very well.
Thanks in advance!