akikan40
Riser being called trash gives me Chinese novel vibes. There are many devil's worse than Riser, but they do not have a reputation like that. On top of that Riser was fairly strong and had a reputation before in the underworld, now Riser is suddenly known as trash? Even if you say this was done by the Gremory family, I think this is kind of forced. I know this is just a setup for a faceslapping scene.
An idea for skills he could get (which are not too overpowered but incredibly useful) (Skill of First Hassan from Fate Series) At The Boundary (A Rank): He who walks on the boundary of the valley of death, knows what death feels like and is not afraid of it nor the fear. Gives the user resistance to instant death and also gives charm immunity. Another aspect of this skill is to imbue instant death properties to all sword attacks of the user, although the probability of granting instant death is low.