Every time Ayase and Shouko faces off, a little piece of me dies inside...
ARENA 01: [Himeji Mizuki] Iwasawa Masami
ARENA 02: Aragaki Ayase [Kirishima Shōko]
ARENA 03: Makise Kurisu [Abstained] Kuroi Mato
ARENA 04: Charlotte Dunois [Abstained] Hasegawa Kobato
ARENA 05: [Kashiwazaki Sena] Yuzuriha Inori
ARENA 06: Sakura Kyōko [Shimada Minami]
ARENA 07: [Nakagawa Kanon] Honma Meiko
ARENA 08: [Irisviel von Einzbern] Elucia de Lute Ima
ARENA 09: Kasugano Sora [Fear Kubrick]
ARENA 10: [Mine Riko] Gasai Yuno
ARENA 11: [Kōsaka Kirino] Nakamura Yuri
ARENA 12: Kanzaki H. Aria [Victorique de Blois]
ARENA 13: [Gokō Ruri (Kuroneko)] Akemi Homura
ARENA 14: [Suzutsuki Kanade] Haruna
ARENA 15: Shiomiya Shiori [Haqua du Lot Herminium]
ARENA 16: [Tōwa Erio] Yui
ARENA 17: [Mikazuki Yozora] Konoe Subaru
ARENA 18: Tachibana Kanade [Eucliwood Hellscythe]
ARENA 19: [Shana, Aisaka Taiga] Tachibana Kanade, Gokō Ruri (Kuroneko)
ARENA 20: Holo [Hiiragi Kagami]
ARENA 21: Furukawa Nagisa [Abstained] Ikaros
ARENA 22: Hirasawa Yui [Katsura Hinagiku]
ARENA 23: Nakano Azusa [Akiyama Mio]
ARENA 24: [Senjōgahara Hitagi] Tōsaka Rin
ARENA 25: Asahina Mikuru [Shirai Kuroko]
ARENA 26: Nymph [Ichinose Kotomi]
ARENA 27: Last Order [Fujibayashi Kyō]
ARENA 28: Hecate [Abstained] Konjiki no Yami
ARENA 29: Hirasawa Ui [Abstained] Kotobuki Tsumugi
ARENA 30: [Sengoku Nadeko] Louise Vallière
ARENA 31: [Oshino Shinobu] Saber
ARENA 32: Aisaka Taiga [Nagato Yuki]
ARENA 33: Shiina Mafuyu [Index L. Prohibitorum]
ARENA 34: [C.C.] Sanzen'in Nagi
ARENA 35: Illyasviel von Einzbern [Abstained] Suzumiya Haruhi
ARENA 36: Sakagami Tomoyo [Abstained] Izumi Konata
ARENA 37: Shana [Abstained] Misaka Mikoto
ARENA 38: Hei, Triela [Sabrac, Fujibayashi Sheena]
^What's with the seemingly random Arena 38
?