[Lemon Jiru] Anta no seiyoku, zenbu watashi ni butsuke nasai ~tsu!

The shy schoolgirl Yuyu, sporting a ponytail and ample breasts, invites her brother to become her practice partner, urging him to "put it in your mouth" and "go even harder." Their intense encounter escalates from tentative touches to vigorous intercourse, with Yuyu moaning "whoa‑whoa‑whoa! sis! sis!" as he thrusts deep inside her. After climaxing, they embrace, whisper "I love you" and "the scent of first love," promising a precious bond that endures.