Buaisouna Kareshi Mochi no Oshiego to Ero I Koto Shinai to De Renai Heya ni Tojikome Rareta Hanashi 無愛想な彼氏持ちの教え子とエロい事しないと出れない部屋に閉じ込められた話, A Story About Being Locked In a Room Where You Can't Leave Unless I Do Perverted Stuff With My Apathetic, Boyfriend-Having Student