I've lived a simple yet happy life with my husband and our only son, Satoshi. Being an only child, I've always made sure to give Satoshi extra love and attention compared to other families. But lately, I've noticed a strange change in Satoshi's behavior now that he's reaching that age. The way he looks at me feels different somehow. Especially his gaze lingering on my back and buttocks—it feels oddly detached, as if I'm a complete stranger. I can't help but worry that if things continue like this, something terrible might happen.