[Kurebayashi Asami] Toy for two (COMIC LO 2022-09)

Akane can't stop giggling about what her teacher said in health class, and her little brother Sho becomes the subject of a very hands-on follow-up lesson—one she eagerly shares with her shy, glasses-wearing friend Yukino. With the boy bound and blindfolded, Akane milks him with a merciless handjob while showing off for Yukino, who soon graduates from stunned spectator to eager participant, stroking him until he erupts all over her shirt. Between facesitting, teasing flashes of shimapan, and a finale in school swimsuits where the girls play with their favorite toy, poor Sho-kun is kept cumming over and over without ever being allowed to see who's making a mess of him.