Shiro was born when Nanao was 20 years old. Nanao overcame the opposition of those around her and raised Shiro on her own. Since they were close in age, they were more like friends than parent and child. Shiro invited Nanao to a hot spring trip when Shiro became an adult and his university life settled down. Nanao was in the usual travel mood, but she had a feeling that she wanted to confess to Shiro...
