Mop Girl

Momoko Hasegawa is working at "Angel Life Communications", a company arranging weddings among other things. But when she was helping another person she got into big problems because of her clumsyness and had to transfer to "Little Angels", the sepultural institute of that company, where she works at the special cleaning division, in which she has to use a mop often to remove blood stains of dead bodies.
But beside her effort she has another special ability: she can re-live a day with the knowledge of the day "before" to save a dead person from dying if a dead person is leaving strong emotions. She got that gift when she was a child and her predecessor died rescuing her. When Momoko turned 21 she is able to use that ability for the first time...