The manifested spirit of Jūshirō Ukitake's Zanpakutō, appearing during the Zanpakutō Unknown Tales arc. They take the form of two young boys who are inseparable—constantly holding hands and laughing together, which mirrors how they appear in their released form, bound by a red rope.
When they first showed up, both were playful and carefree, though their decision to leave Ukitake in the first place remains unclear, especially since they never displayed any actual resentment toward him. After being restored to their normal state, Sōgyo no Kotowari became noticeably more obedient, actually listening to Ukitake instead of running wild. Their dynamic shifted to something more like that of younger brothers or sons vying for their father's attention—constantly vying for his time and affection.
Content compiled by AnimeList.moe from publicly available sources.