Momo is a shinigami who leads deceased souls to the other side. She's dressed in all white and has long white hair. She carries with her a large scythe and an ID card (A-100100) to facilitate her identification as a shinigami. She tries to ease the suffering of the people she encounters—whether they be living or already dead—by enabling them to live their lives to the fullest, or at least to transfer to heaven without regrets (in contrast to other shinigami). She cries a lot, saying she cries for the dead because they no longer can. Accompanying her is a talking black cat familiar named Daniel. The living frequently hear the ringing of Daniel's bell when Momo and Daniel are nearby.