|Other name||Coach Signum|
|Study||Sports University (unnamed)|
|Work||Old Bookshop Yagamidō,|
Kusama Ittō-ryū Dojo
Assistant Kendō Coach
|Primary avatar||Sword Knight|
|Japanese name||八神シグナム |
|First app.||INNOCENT (ch.0)|
Signum Yagami (八神シグナム Yagami Shigunamu) is originally a Wolkenritter in the primary continuity first introduced in Magical Girl Lyrical Nanoha A's. In the INNOCENT spin-off series, she becomes a family member of Hayate Yagami, originally her mistress.
Signum is a polite and calm person.
Signum is a sports university student and formerly a senpai of Mituki Scaglietti in the high school. Being a kendō rank-holder, she also works as Assistant Kendō Coach at the Kusama Ittō-ryū Dojo. For unknown reasons, Signum does not need to do housework in the Yagami family except for strength works, like the father of the family.
Signum has not played Brave Duel until the Team Yagamidō is formed when the first Brave Duel Grand Prix approaches.