Check for characters missing birthday info here.
January
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Kouta Mizuhara
February
-
Mio Kanzaki
March
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Michitaka Sakai
-
Ousuke Kiryuu
April
-
Takezou Kurata
May
-
Tetsuki Takaoka
June
-
Kazusa Ootori
-
Saneyasu Adachi
July
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Satowa Houzuki
September
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Chika Kudo
-
Suzuka Takinami
October
-
Hiro Kurusu
November
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Isaki Kudoo