I bumped into my girlfriend's younger sister at a groping tea shop! I frantically fondled her huge breasts and secretly fucked her until I ejaculated inside her. (Aizawa Kaho, WANZ-774)

I like big breasts but ended up with a flat-chested girlfriend, which made me regretful. So I went to a groping tea shop... only to find out that her younger sister, Rina, worked there and let older men grope her big breasts. A few days later, I couldn't resist coming back and specifically asking her to grope her sister's big breasts, and even secretly having sex with her inside her at the shop! From that day on, even at my girlfriend's house, I would grope her sister's big breasts!