[ClockLord (Suzushiro Nerita)] This Guy is NOT my Boyfriend!! ~A day in the life of the Shinomura siblings~ [Rupee]

A shy sister discovers that her brother's affection is not what she expected, as he openly flirts and touches her in ways that blur the line between sibling love and desire. The story follows their intimate encounters, from whispered teasing to heated moments where she gasps and he admits his growing hardness, highlighting the raw tension of their forbidden relationship. With each page the emotional stakes rise, promising a provocative day in the life of the Shinomura siblings that explores the complexities of incestuous attraction.