Called "Natsu-nee" by her classmates, Hinata-senpai has a caring and elder-sisterly demeanor. However, her competitive side hides a secret: she's a masochistic woman who becomes completely submissive to the man she loves. When alone with him, her position flips 180 degrees. She transforms from a woman into a willing pet. She finds the seminar trip tiresome... Arriving at the lodging, she immediately gets a quick release. She has no interest in fieldwork, so she feigns illness to be alone with Hinata-senpai. They engage in plenty of training sex until her classmates return. She's called to the men's bath and made to wear a revealing uniform, leading to clothed sex. While the teacher and classmates are drunk and oblivious, they engage in thrilling, taboo sex with her forced to stifle her moans. No matter how outrageous the requests, she never refuses. She's my personal masochistic pet.
