Dandelion(2002)

Dandelion

The one-shot centers on Tetsuo Tanba and Misaki Kurogane, two members of the "Japan Angel Federation Sendoff Department" who search for souls who cannot pass on to the afterlife due to lingering regrets, and send them to the afterlife.

(Source: Anime News Network)

Note: Published in Weekly Shounen Jump 2002 No.42