Collect the Strongest Weapons
Things to Do After Beating Scarlet Nexus
Many of the new side quests mentioned above will provide you with previously unobtainable materials and items. More specifically, the new Phantom Art materials can be exchanged at Satori’s shop to obtain the best weapons available for each character.
The catch here is that you can only get the necessary Phantom Art exchange materials for the platoon of the character you’re currently playing as. So only Yuito will be able to obtain the best weapons for Tsugumi, Gemma, Luka, and Hanabi, and only Kasane can get the weapons for Arashi, Shiden, Kyoka, and Kagero.
This means that you’ll need to play through Scarlet Nexus a second time as the other protagonist to complete your collection of the best weapons in the game. It’s a time-consuming process, but EX New Game is a huge help in reducing the playtime of a second playthrough.