In order to allow players to experience Numina before locking in their character's statistics, Numina allows players to rewrite their first character one time prior to reaching 50 CP.
To take advantage of this rewrite option, send a request to the Database Admin. In the request, please specify the skills you want added and deleted.
With the exception of this one-time rewrite, any CP spent can only be un-spent by finding a way to do so in-game.