Before arriving at the World of Inferno, the sparring I routinely did with my Companions was mostly one against many. Given that I pulled ahead of them because of the Kouryuu's Legacy plus I also assimilated the Chaosworld, they could only match my full strength when they were working in groups of five or six. More often than not, it would still end in my win as they would've been totally crippled by the debuffs I could pile up on them. Furthermore, with my defensive capabilities that also made use of Energy Control and Energy Molding, it would be a miracle for them to land a hit on my body.
In any case, that's in the past now. With Yuko and Nysia stepping into the 2nd Realm of their respective Transcendent Pathway, they should've unlocked a new ability.
Well, it's not possibly unlocking but the merge of the properties would allow them to reinvent some of their skills.