Hello sir, I have the same problem as this guy. There is this fight with Kiryu Coco as soon as you go into the game. it went well after I defeated the first two enemies. Then the yakuza boss and other two henchmen appeared. Then Flare and Pekora backed Coco up.

After I killed two of the henchmen, I've been spamming attack on the Yakuza Boss.  Then the boss powers up in DBZ fashion. The game stops progressing when I used any ability/attack right after the Yakuza Boss powers up. When I tried using Flare's molotov ability to him(after he did the power up thingy), the game just freezes at the part where the boss is a bit zoomed in. The BGM is still playing and the living animations of the Holomems are still moving, it's just that... the game just stops at that moment.