[FRAC (Motomiya Mitsuki)] Sirius no Suikan | Sirius: The Water Front [IncestGoodness]

Under the summer sun at the waterfront, a close bond between sisters is tested by more than just the heat. As they lounge by the shore, a playful exchange about growing bodies and tight swimsuits turns into a much more intimate encounter. In the privacy of a seemingly empty changing room, the tension between the two rises, turning a quiet day at the beach into an exploration of a feeling that can only be called love.