HYBR-001 A one-night, two-day trip to Tokyo for exams. The aunt is actually an uncle. Rin Shitsuki.

I came to Tokyo from the countryside to take an exam and ended up staying at my aunt's place, who lives in Tokyo. My mother's younger sister is beautiful but still single. As a kid, I had always admired this refined and beautiful woman from the city. However, on the day before the exam, I caught a cold and, in my delirious state, accidentally took a performance enhancer instead of medicine. On my way back to my room, I noticed that my aunt's door was slightly open, and driven by impulse, I…