Meanlucario
Time to get spooky
At least the first World game gives you a free ultimate with Numemon and can reverse a Sukamon. Here in Cyber Sleuth they are just stepping stones for other, more useful Digimon.Incidentally my first ultimate here is a Monzaemon achieved through a Numemon. Just like it was 20 years ago in World.
It just dawn on me that you played DW1. Next Order takes after that game if you are ever interested (likely some time after CS/HM).