This is my problem with Nero. He is pushed into the main protagonist role, but he doesn't feel like he deserve it. In each game he appeared, Dante did most of the work, then stepped aside and let Nero get the glory. DMC 4 did it quite good with Dante being the mentor figure, so it make sense. But in DMC 5, Nero should not have the most screen time.
That create a feeling of Nero "cheating" his way up in DMC 5. Like he get the focus with his Devil Breakers which even get their own hype mission, but when you look at it, these are just a bunch of gadgets, nothing so amazing about it. But Nero keep going for Urizen, making you feel like he got a trick up his sleeve. But no, he has nothing else and yet he somehow manage to do better than a DT Dante with the Sparda by passing Urizen shield. And then he get rekt and Dante come and save the day. The game hype Nero so much and then just drop him for Dante.
The worse being that after Nero is presented as far below Dante, the story try again to make him shine over Dante by making Dante be an idiot fighting his long lost brother to death for literally no reason. That way, Nero can come and say "Guys chill out, you can talk about it you know" to sound like he's "better" than the twins. But it's just stupid and obvious. Also Nero get his DT in a ridiculous way. It is framed as epic, but looking at the core of it, it's just completely dumb. Nero didn't even earned it trought hardship and becoming a better person, he accomplished nothing in the game and never thought about if he's wrong or not.