I'm pretty sure gray unlocks both the Heiyue and Ikaruga options for Chapter 5. I would probably say the Bracers are the weakest faction for Chapter 5 imo.
@@Anji_86 yeah u did, I got really lucky with all stats at 3, the last sidequest just gave me enough to get chaos at 3. I'm playing the twice for 100% so I'll do my 2nd fav first, and my fav last