One day, Ayako, a slightly strange girl who is good friends with the youkai, decides to go on an arranged marriage meeting. Her father's arranged marriage partner is a young man named Shirayuri who serves as a second lieutenant in the military. However, Lieutenant Shirayuri (?) appears before Ayako. Something seems suspicious. Could it be a fake disguised as a youkai? Doubtful Ayako suggests asking him a few questions first to make sure he's the real one. Lieutenant Shirayuri (?) responded to the offer with a smile.

"Ask questions, and if there's nothing suspicious, decide who you're going to marry!"

(Official game synopsis MTL}