Kuren was twirling his fingers, his mind finding it difficult to calm.
This must be an accident!
There's no way his World Setting Technique could have a flaw. This has to be an accident.
Despite Kuren's disbelief, what was bound to happen, happened. The Treasure Hunters, whom he thought he had under control, discovered a flaw in his World Setting Technique. Although this flaw wouldn't destroy the entire technique, it did affect its overall perfection.
Kuren pursued perfection and couldn't tolerate even the slightest flaw. He believed that if there were any errors in the World Setting Technique, the bloodthirsty creature would return to him.
This was the last thing he wanted to think about and also the main reason he so fervently pursued perfection.
Now that these formidable individuals had discovered a flaw, he considered it a contribution toward perfecting his World Setting Technique.