My friend's older sister is a "hot girl" who's "unfriendly to otaku" but "very gentle with my penis." (Sarina Momonaga, ROYD-324)

When I went to my otaku friend's room, I ended up sharing it with a completely unfriendly hot older sister! The moment she saw me, she got angry and said, "You're adding to the annoying stuff!" Then, when my friend wasn't around, she proposed a devilish deal: "Lend me money, and I'll give you a handjob!" It was terrifying...but also incredibly erotic! In the end, both my money and my sperm were drained. Sure enough, I was threatened every day with "If you drain me again, you'll have to pay me back," but actually, this hot older sister, who was obsessed with my penis, finally couldn't hold back one day. "Don't look over here..." she straddled me and performed a forced penetration and ejaculation inside me! From that day on, this hot older sister, who was demanding of otaku friends but secretly always acted spoiled and dependent on my penis and forced me to ejaculate inside her, began her endless sex life!!