The Shinigami of the Gotei 13 have been tasked by the Central 46 with taking out the immortals of UQ Holder for breaking the laws of nature with their mere existence (not a scenario, just a bit more fun than just writing "They fight in the arena").
All fights take place in Karakura town, because that place can't get blown up enough.
1. Yukihime vs. Genryusai Shigekuni Yamamoto
2. Jinbei Shishido vs. Kenpachi Zaraki
3. Sept Shichijuurou Nanao vs. Shunsui Kyoraku
4. Karin Yuuki vs. Gin Ichimaru
5. Juuzou Shishimi vs. Byakuya Kuchiki
6. Gengorou Makabe vs. Mayuri Kurotsuchi (Mayuri gets all the equipment he had during the final battle with the quincy)
7. Touta Konoe vs. Sosuke Aizen
8. Ikkuu Ameya vs. Renji Abarai
9. Kuromaru Tokisaka vs. Toshiro Hitsugaya
10. Santa Sasaki vs. Rukia Kuchiki
Which side wins the most fights?