DOCP-245 - Thought it was my GF but it was her sister! Now she's hooked and begging for more.

Since it's a series, I get that it's meant to appeal to male fantasies, but... is it just me, or are the 'mistaking her for the girlfriend and immediately having sex with the sister' scenes getting lazier? The real highlight is the build-up followed by the sister getting turned on and taking the lead, so I wish they'd put more effort into that! In that sense, the ending where he's sleeping in a row and thinks it's his girlfriend but it's actually the sister—that was a nice touch.