A story featuring a petite schoolgirl under 150cm and her private tutor, with a slight age gap and a lesbian setting. The young student is gently taught intimate acts like tongue kissing and mutual fingering by her beautiful, kind, and charming older sister figure. The highlight lies in watching the girl's youthful body gradually grow hot and responsive, as their relationship deepens. Their secret after-school moments carry a pure, heartfelt lesbian atmosphere, strengthening their bond. The tenderness and passion between the two girls feels like a truly special experience.