Sword Art Online Alternative Clover's Regret, Vol. 1 (light novel) — Soitiro Watase

A HAUNTED QUEST Asuka Empire -- a VRMMORPG with a Japanese aesthetic, and the original home of the Sleeping Knights -- is holding a new horror-themed event called the 108 Apparitions. Nayuta, a stoic warrior priestess, and Koyomi, an excitable ninja, are enjoying a break from the frights when they come across a mysterious monk named Yanagi. Despite knowing nothing about games, the elderly man is determined to complete a certain quest within a week, and he has agreed to pay a detective a ridiculous sum to make it happen. Just as strange as his request is the detective himself, a foxlike young man who has put all his stat points into luck. Yanagi's desired quest turns out to be none other than Ghost Orchestra, which has stumped every player who's tried it. Can this unlikely party manage what no one else has?