Naruse Kumiko

A mother of an adolescent son, as well as a good, supportive wife to her husband who works as a salaryman. She works as a piano teacher and holds piano lessons in her home.

She treats her students equally except for Yuuga who she has known for a long time, and is good friends with her son Takanari.

Has decent moral standards, so she never once thought about cheating on her husband. Her experience with men includes her first boyfriend and her husband only.

However, after knowing a young boy's passionate yearning for her, which is even a rare case even in afternoon TV dramas, she was deeply moved, both emotionally and sexually, which got her hooked on a forbidden sexual relationship.