[Wakamatsu] Zettai Okoranai Toshiue Kanojo ni Ichinichijuu Chokkai Dashi Tsuzuketemiru Hanashi [Full Color]

A younger boyfriend spends his day off living together with his older girlfriend, running a quiet experiment to see how much provocation it takes to crack her famously unshakable composure. She stays totally unfazed through laundry duty, breakfast banter, a sweaty workout with her fitness ring, and lazy TV time on the couch, her long legs and relaxed confidence on full display all day. But when his teasing finally goes one step too far, she snaps, seizing his crotch with a furious threat to take his dick off — and his smug closing admission that her angry face was worth it seals this playful battle of wills.