AV industry's No. 1 actress, Ai Uehara, and her real sister, Mai Uehara, co-star! This is Mai's last movie before retirement, making it the only Uehara sisters' threesome movie! Each sister performs solo fellatio and solo sex, and there's also sister lesbian sex, sister threesome sex, and sister double fellatio—a truly packed volume! Plenty of opportunities to cum! Raw insertion and raw cumming inside the world's strongest sisters♥♥