Years and years ago I found a "guro lite" manga of a girl going out on a date with a guy who then consensually beats her so severely that she ends up in the hospital.

Later he brings her home on a leash and beats her further and also hits her with a sword leaving deep cuts all over her body, but not severing anything.

The last panel was her on the floor, broken and bleeding, smiling up at the guy saying that he should kill her so she can die happy, I think.

Anyone know what that manga was, and where I could find it?