Check for characters missing birthday info here.
January
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Mai Shiranui
-
Homura
-
Ryobi
-
Ryona
February
-
Yomi
-
Hibari
March
-
Hakufu Sonsaku
-
Honoka
-
Shiki
April
-
Yozakura
May
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Kiriya
-
Kafuru
-
Kiriya
-
Kula Diamond
June
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Murasame
-
Murasame
-
Marie Rose
July
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Ikaruga
-
Naraku
-
Haruka
-
Ryoki
August
-
Ayane
-
Miyabi
September
-
Shimei Ryomou
-
Asuka
-
Hikage
-
Kagura
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Kagura 2nd form
-
Kagura (3rd form)
-
True Kagura
-
Suzune
October
-
Super Sonico
-
Murasaki
-
Ryofu Housen
November
-
Katsuragi
-
Unchou Kan'u
-
Daidouji
-
Daidouji
December