Check for characters missing birthday info here.
January
-
Ichirou Mihara
February
-
Sai Jounouchi
April
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Tamayo Kizaki
-
Misaki Suzuhara
May
-
Ringo Seto
June
-
Alice Fujisaki
August
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Shouko Asami
-
Masaharu Ogata
September
-
Koutarou Kobayashi
October
-
Kaede Saito
-
Oujirou Mihara
-
Madoka Fujisaki
November
-
Shuko Suzuhara
December
-
Hatoko Kobayashi