Ashmodai
He let Voldemort escape... He literally was a soul, you are a devil and you couldn't catch him and eat it? Dude, is everything going to be a copy of HP Canon with nothing changing, to then go an do a copy of dxd Canon with Nothing Changing? How can a Devil, fail to catch a soul, he should know plenty of soul magic...
Man canon is being stuck to near religiously here. He's a DxD Devil with year's of magical tutoring and traning under his belt. Sure HP wizards have been 'buffed' but he's still a Devil. Which in DxD makes him just 'better' than humans. Like I'm enjoying the story but at this point it feel's like "Oh he's a devil and this is a crossover with DxD" has become some sort of background note. He's seriously holding the idiot ball.
I have to say that I found this chapter not so great there's too many little holes. From him not doing great in combat because of him playing his cards too close to the vest to summoning help from the Gremory or using his sacred gear to trap/destroy Voldemort plus Since he's a devil he should have some way to deal with Souls and probably a couple things that I'm missing I just think this was poorly executed. I believe if you wanted that scenario to go that way it did you needed to have a more valid reason for him not using other methods.
just ignore the comments without sense dear author how they supose that he is going to eat a soul jut because is a devil or grab a soul in his longinus obviusly he could be more efford to beat him but voldemort is a soul what is the point if he show all his might when he knows that voldy is going to scape ...