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|Full Name||Kudou Soushi|
|Novel|| Volume 21, Chapter 3 (First Appearance) |
Volume 21, Chapter 5 (Named)
Soushi is a son of Kudou Makoto, and an older half-brother of Kudou Minoru, who is seven years younger. He is also a first-cousin to Fujibayashi Kyouko and a second-cousin to Angelina Kudou Shields. 
Soushi's magical power is inferior to that of his brother Minoru.