It's rather simple. It replaces Devil Jin's lines in-game for Angel Jin's. I adjusted it and tweaked it a bit, there may be some flaw or another in ragearts, but in general it should work fine.

The usual installation still follows.

Tekken 8 Folder>Polaris>Content>Paks>~mods | Drop it in the ~mods folder, if you don't have one make one.

NOT UPDATED FOR HEIHACHI.