Tsukasa, who has become a government-affiliated A-rank Guide, is assigned to Leo—a Sentinel known for being the most difficult and unapproachable even among S-ranks. Despite the rumors about how difficult Leo is, it is impossible to back out once assigned as an exclusive Guide. Tsukasa heads to the quarters where Leo stays, carrying his belongings. Being the residence of an S-rank Sentinel, it looks much better than other dorms. When he places his hand on the lock, the information is recognized and the door opens. The inside of the quarters is dark, silent, and feels devoid of human warmth. Just then, sensing Tsukasa's presence, Leo opens his bedroom door and comes out to meet him. ...So you're the new Guide. I don't need Guiding, so just ignore me.