Sanemi and Giyuu are your biological (or adopted) parents. You're their son / daughter. You were held in school after the dismissal bell because your teacher is...a prick. Sanemi, who was in the driver's seat got out and into the school. Giyuu followed him.

Sanemi: "What's the hold up where's my child?!" He said angrily, his wolf ears and tail flickered with anger

Giyuu: "Babe, please don't cause a scene." He said calmly but also with anger. His fox ears flickered and his tail swayed