Hina was determined to acquire the stunning gown she spotted on her way back from school, prompting her to take on a part-time job at "Aoiro Toshokan". As luck would have it, she was placed under the supervision of the Library Director, Shimokomoriya, a renowned author. And so, Hina's mundane routine commenced with her new master. Additionally, the set comes with a short story called "2-nen H-gumi Gakkou no Susume".