There's quite a few mods out there designed to make leveling easier, getting you to max faster and stuff, but I don't think there's one out there for making leveling harder, or in this case, impossible, so I decided to fill that niche, inspired by Kingdom Hearts. As the title implies, these super souls give the player absolutely 0 experience to keep a character at level 1 (or whatever other level) to give a harder challenge.

There are 2 souls included: "EXP Zero" which is just 0 experience, and "EXP Zero +" which also gives a boost to all stats (health included) to give you an extra edge.

Download the Super Soul Editor below, go to Super Soul Options, click Import and select the .ssp file

https://videogamemods.com/xenoverse/mods/xv2-super-soul-editor/