A few arenas where I had conflicting votes, but managed to decide on one.
Only Arena 3 I had no plans on deciding who to vote for......... because I can't pick between Mikan or Noire.
ARENA 01:
[Sakura Kyōko] Ai Astin Chitanda Eru
ARENA 02: Nishikino Maki Chocolat
[Yuigahama Yui]
ARENA 03:
[Abstained] Noire Yūki Mikan Kaga Kōko
ARENA 04:
[Roromiya Karuta] Kitashirakawa Tamako Celestia Ludenberg
ARENA 05:
[Koshigaya Komari] Charlotte Belew Mukaido Manaka
ARENA 06: Yatogami Tōka
[Yūōji Ōka] Kasukabe Yō
ARENA 07: Shindō Ai Kurousagi
[Fuyuumi Ai]
ARENA 08: Neptune Matsuoka Gō
[Miyauchi Renge]
ARENA 09:
[Tsuchimikado Natsume] Inaba Himeko Misaki Mei
ARENA 10: Nōmi Kudryavka
[Kudō Asuka] Yukinoshita Yukino
ARENA 11: Shirakiin Ririchiyo
[Nepgear] Kujō Karen
ARENA 12: Gasai Yuno
[Dekomori Sanae] Miki Sayaka
ARENA 13: Kurugaya Yuiko Kaname Madoka
[Iona]
ARENA 14: Ichijō Hotaru
[Momo Belia Deviluke] Yukihira Furano
ARENA 15:
[Myucel Foaran] Takanashi Tōka Akatsuki
ARENA 16: Takao
[Cthugha] Shiomiya Shiori
ARENA 17: Kuroki Tomoko
[Shokuhō Misaki] Laura Bodewig
ARENA 18: Kamikita Komari Leticia Draculair
[Kirigaya Suguha]
ARENA 19:
[Nyarlathotep] Dairenji Suzuka Kirigiri Kyōko
ARENA 20: Tobiichi Origami
[Himeragi Yukina] Natsukawa Masuzu
ARENA 21: Nase Mitsuki Matoi Ryūko
[Frenda Seivelun]
ARENA 22: Yui Mikasa Ackerman
[Hiradaira Chisaki]
ARENA 23: Frey
[Natsume Rin] Tōma Kazusa
ARENA 24:
[Haqua du Lot Herminium] Yusa Emi Morgiana
ARENA 25: Kuriyama Mirai Yūki Asuna
[Yoshino]
ARENA 26: Suzumiya Haruhi
[Illyasviel von Einzbern] Kasugano Sora
ARENA 27: Saber Nagato Yuki
[Kashiwazaki Sena]