After Arthur finished with his little 'self-discovery', he didn't take any further actions after breaking whatever spell "he" placed on himself.
As for why it was so easy to break, he guessed it was because if "he" used anything stronger, either he or Cattleya would have long realised something was off.
But it seemed meeting Lucifer and going on this law comprehension speed run wasn't within "his" plans, otherwise, Arthur would not have been able to detect it so easily.
The boy didn't put too much thought into it as he casually finished his chocolate chips and tossed the wrapper in a nearby trash bin, before pulling out one of his phones from his subspace and began scrolling through his novel-reading apps.
'I guess I should read this novel about a guy who reincarnated as a hero within a world with a system.'