It makes sense now

I was just rewatching Any Sport and Darius says that he not only knew the previous golden guard but they were also his mentor. If that’s the case then Darius would know who he was and what was going on. Darius was close to the previous Hunter and is looking out for him the same way his mentor did for him. He’s trying to make up for letting his mentor be destroyed by taking care of what is essentially his reincarnation.