Arc 1Jun's Path to Soul Reaper
After his parents died fighting a Menos Grande, Jun entered Shin'ō Academy and formed a friendship with Sōsuke Aizen. Jun graduated into the Tenth Division and began sharing training methods, while he and Aizen assessed their strength against Shunsui Kyōraku's.
- Shunsui Kyōraku arranged Jun's admission to Shin'ō Academy after Jun's parents died fighting a Menos Grande.
- Jun set academy records in Reishi training and began studying swordsmanship and Kidō.
- Jun met Sōsuke Aizen in the Journal Hall, and Aizen became his training partner and confidant.
- Jun learned that Yuzuki Samidare had died on a mission, and he and Isuzu Takasugi became a couple.
- Jun and Jing graduated, and Jun earned a seat in the Tenth Division while planning to marry Isuzu.
- Jun captured Hollows for the Twelfth Division and organized lessons to help Tenth Division members improve.
- Jun shared his Chant Harmony Score for Kidō training and discussed reducing expedition deaths with Aizen.
- Jun and Aizen compared their Spiritual Power Tester results and estimated how far they were from Shunsui Kyōraku's strength.