Chapter 82 - Castle Crimson

With the Celestial Key to Castle Crimson now fused into himself, Kaito feels something different, a sensation as weird and uncomfortable as having a pulsating neck artery after eating something too greasy. It doesn't hurt, but it's inconvenient. 

"Now what? How do I use this? It's not a skill, but does it work like one?" Kaito wonders.

Focusing his mind, Kaito tries to understand how he can activate the passage to the castle beyond dimensions. He closes his eyes and extends his right hand forward, thinking of the Celestial Key, and tries to surrender to the moment, detaching himself from distractions and focusing solely on the item. The energy emanating from the Celestial Key seems to respond to his call, as if eagerly awaiting this moment, and the palm of his right-hand glows for a moment. However, upon opening his eyes, Kaito sees that nothing has happened.