Hello, hi, I just need some help to find a manga online i've been searching for a long time now and it's really getting on my nerves of not finding it, so here's the story of what i can remember :
The mc is criminal that killed someone and is known to be cold hearted and have no emotions, so some sort of government tries a rehabilition thing on him, and take him out of his cell to be put after in a school, and there he meets a girl who doesn't know he's a murderer, and like that he starts to regain feelings and so guilt of the killing he did, and after in the story he apologies to the member of the family of the person he killed.

That's all i can remember, and i'd really appreciate someone to help me. Thanks.

Doesn't sound exactly the same but maybe Shikeishuu 042

Oh yes thank you very much, i'm very grateful, thanks.