@Eevah
they said if your reshi is to high you don't pass on so they do a ritual to send them to he** and they have been doing it to the captains that died in tybw and ukitake is one captain that died so that's why he's in hel
they said if your reshi is to high you don't pass on so they do a ritual to send them to he** and they have been doing it to the captains that died in tybw and ukitake is one captain that died so that's why he's in hel