Angelina Kudou Shields

Angelina Kudou Shields is a foreign exchange student from USNA who arrived at First High School during the latter half of the main characters' freshman year, taking Shizuku's place who went to study in Berkeley, California.

She is introduced as a member of the Kudou Family from the Ten Master Clans. Because of her popularity and not wanting to spend time after school, she is unable to decide which club she will join and is instead placed as a temporary member of the Student Council. She refers to herself as "Lina", and usually hangs out with Miyuki.

A strategic class magician of the USNA, one of the Thirteen Apostles under the alias "Angie Sirius"

Later on, gets adopted by Aoba Toudou and becomes a naturalized Japanese citizen (after retiring from the USNA army as Sirius). Currently resides with Tatsuya and Miyuki as her bodyguard.