Shinigami are regularly stationed in the Human World. The duties of such Shinigami include finding and sending Pluses to Soul Society and slaying Hollows in order to protect Humans and Pluses. Shinigami stay in the Human World for a set period.
Rukia Kuchiki was officially stationed in Karakura Town for one month,
[4] though she actually stayed for much longer than this. There is only one Shinigami stationed in Karakura Town at a time. On occasion, groups of students from the
Shin'ō Academy are sent to the Human World to gain experience in the duties they will have to perform when they become full-fledged Shinigami, an example being the soul burial practice conducted by
Shūhei Hisagi,
Izuru Kira,
Renji Abarai, and
Momo Hinamori.
[5] Members of the
Onmitsukidō are known to have visited the Human World, capturing images of Ichigo Kurosaki injuring a Menos Grande.
[6]
When Shinigami come to the Human World, their
Reiryoku can unduly influence the local population if they do not keep their power under control.
[7] Failure to exert such control can awaken the powers of living Humans who have some spiritual power, as exhibited by Ichigo Kurosaki's lack of control being blamed for affecting his friends. Shinigami are bound by Soul Society's laws not to harm or interfere with Humans. Rukia Kuchiki is arrested for breaking these laws. Captains and lieutenants who travel to the Human World have a seal placed on their powers, referred to as a limiter, which can contain up to 80% of their power, although it can be removed in the event of an emergency. This restricts their spiritual power to a level at which they will not accidentally influence the Human inhabitants.
[8]
