No confirmed fix yet. Players suggest: Jupiter EX stigma set to go with it.
The problem
He is the only chars that I don't have it, for the story part I nearly clear all of them, roll all chars but still can't find him anywhere, how to get him really, thanks
What players suggest
It's in Chapter 2: In Search of the Princess, Sub-story 7: The Road of Roses, Men and Chivalry. You need to have Erneste already (you should but maybe do not if you are rushing through). You'll have the intro quest stage, then 4 battle stages, and get him as a reward for completing the sub-story. He's super hard to level after EX - you'll only be able to use fragments from Gulsni and the…
I feel like I had this happen on my PC (midline/potato, to be honest) - IIRC, what worked for me was when you are at the loading screen, do NOT click in the circle to load the game when it is ready. Instead, go to the Settings icon in the bottom right corner.
No confirmed fix yet. Players suggest: A new gacha could adopt your suggestion as a gimmick to draw players in, but it's not likely a pre-existing one would change.
Day One Fixes