Since I started working in the spring, my son Ryuichi took me on a hot spring trip as his first act of filial devotion. As his only child, I've always been cherished beyond words, and I truly appreciated his thoughtful gesture. However, I never expected this trip would drastically change our parent-child relationship. While we were soaking together in the hot spring, just the two of us, and he was gently washing my body, his hands began softly caressing my breasts and lower regions. That warmth and tenderness slowly began to stir emotions deep within me.