Arisu, a pure and innocent schoolgirl, meets Rui, her private tutor—intelligent, beautiful, and tender, showing Arisu a special kindness unlike anyone else. From that moment, Arisu falls deeply in love. For the inexperienced girl, everything Rui offers is a first—quickly enveloping her in waves of pleasure. Their forbidden lesbian relationship grows increasingly intense, a bond they wish to keep hidden from the world, as their feelings for each other deepen and entwine. This passionate love story, where innocence meets desire, captivates readers with its emotional depth and raw intensity.