A dream come true for Ruri, who says Ai Uehara is her favorite!! A sweet cohabitation life where big sister Ai gently watches over Ruri, who is so nervous she's almost in tears! Ruri insists that swallowing cum feels better, while Ai argues that creampies are definitely the best! Though they start off bickering, in the end, they both find that creampies, swallowing, and sticky sperm all feel amazing when they're together! A co-starring work that's guaranteed to leave you grinning!