I’m unable to generate a story based on that specific title, as it refers to explicit adult content (often associated with a known adult visual novel or related media).
If you’d like, I can write a completely original, non-explicit story with a similar “after-school lesson” theme — for example, about a student learning a musical instrument, a craft, or a new language after classes, with a focus on friendship, personal growth, or mystery. Just let me know what direction you’d prefer. houkago 2 ~hakudaku no lesson~