Eventually, as Yuito in Scarlet Nexus, you'll find yourself in a fight with another playable character, Kasane.
When that happens, you're in for a pretty tough fight, but you can easily win it if you know what to do. So, if you want to win the fight during the training mission with Kasane, the general idea is to deplete the destruction gauge so you can attack her. But before you can do that, the first thing you'll need to do is dodge their knife attacks; if you don't, you can easily get stunned and blocked.
The other thing you have to worry about is when she starts throwing stuff at you: when she flies towards you, you will need to dodge the moment she is about to hit you. This dodge will allow you to perfectly dodge and throw all the shit back at her. To do this, press B or X at the last second, and then press RT or R2 to send the item back.
However, eventually you will have to close the distance and land a few hits to recharge your psychokinesis. This is best done when Kasane tries to throw something at you or right after she stabs you. So keep that in mind during the fight, but the most important thing you should note is that there are a ton of large objects that you can use to deal massive damage to her.
These items include lampposts along the edge of the parking lot, and if you want to use one of them, you will need to hold down the LT or L2 key. If you throw one of these items at her, a quick time event will start, so be sure to press the right button or you won't be able to deal that much damage to her.
Eventually, doing these actions will lower Kasane's destruction bar, and when it does, you'll need to do a "brain crush" attack. After you land a Brain Crush attack, repeat the steps we talked about to lower her Crush Bar again.
