Silent Struggles

"Hey, did you use that ability just now? How did you do that?" 

Ignysyl asked, clearly intrigued while landing on Ian's shoulder as casually as before on Ignisia Tower. 

However, Ian didn't care about his antics, nor did he reply.

He simply took a mana token from his hand and inserted it into the small groove on the door in front of him, matching the number on its back.

"Click!"

Although the token seemed magical and inscribed with a pattern, its use was no different from simply locking and unlocking the door of a room. 

It was just like those hotel rooms in his previous life that could be opened with a swipe of a card.

The only additional benefit was the protective array around it, which couldn't be breached without absolute force.

So, a corresponding token was a must.