The Third Magic , Preperations
In the end, the two barely managed to make up towards the end of the year.
This was a few days before Arthur finally planned to use the law crystal core to cast the 'Third Magic." He had enlisted Larry's help as a means of transportation to the crystal realm.
Finally, he then made an agreement with Creusery as a backup in the event that Cattleya tried to prevent him from casting the spell. Of course, this was only necessary if she found out about the spell's drawbacks.
He decided not to make the mistake of leaving Lute and his team behind and even got Hades to inspect the area for any potential problems.
Everything went smoothly, and although Cattleya knew Arthur was planning something, she let him do so without looking into the specifics as she knew Hades was following up on him.
This was part of the reason Arthur let Hades in on his plans, and it was a success. He could not let Cattleya find out about the dangers of the spell at any cost.