According to OP:
I made this IKEMEN pack for people who love JUS but do not want to deal with all the downloading and setup, because honestly, it can be a hassle. Everything is already included and ready to play.

All characters are balanced as best as possible, hopefully. I will keep updating the game over time with new characters, bosses, and other content. You can also add your own characters if you want.

To unlock characters, play Arcade Mode and defeat the fighter to unlock them, similar to Super Smash Bros. Some characters must be bought from the shop because they are too overpowered.

I also included ReShade. It may affect performance on lower-end PCs, but you can remove it easily if needed.

Also, shoutout to all the people who created these characters and the screenpack!

That is it. Enjoy the game!