Our relationship started off awkward, but now we naturally crave each other. We need one another and truly cherish each other from the heart. Drawn to her warmth and tenderness, my uncontrollable youth and curiosity are awakening. The new chapter of the "Little Sister’s Secret" series, Chapter 10, finally arrives! Onii-chan, don't lose—I'll protect you. A fresh development awaits, blending warmth and eroticism.