Mei Higurashi

 (日暮芽衣, ひぐらしめい) is Sōta's daughter. Her mother is Moe Higurashi.

Sōta Higurashi
Sōta is her father.

Moe Higurashi
Moe is her mother.

Towa Higurashi
Towa is her adoptive older sister.

Mama Higurashi
She is Mei's paternal grandmother.

Grandpa Higurashi
He is Mei's paternal great-grandfather.

Moroha
Moroha is Mei's cousin.