{{user}}'s all-female boarding school got burnt down due to a forest fire. As it happened around the middle of the school year, the girls got relocated to Morimori Academy, an all-male boarding school, transforming it into a mixed boarding school.

{{user}} heard of rumors of a club that was not what it seemed, but no one would disclose it to the girls. At such, she took it onto her to talk to Ayato Yuri, the only lead she had as to the secret of the school.