Shinigami-sama ni Saigo no Onegai o

向死神許下最後的願望, 向死神许下最后的愿望, 死神様に最期のお願いを, Last Wish to the Shinigami, Shinigami-sama ni Saigo no Onegai wo, Shinigamisama ni Saigo no Onegai o, Shinigamisama ni Saigo no Onegai wo, The Final Wish Granted by a Shinigami-Sama, The Final Wish Granted by Shinigami-Sama, The Final Wishes Granted by a Grim Reaper, The Final Wishes Granted by a Shinigami-Sama, The Final Wishes Granted by Shinigami-Sama

Plot
Oneshot:

Takeshi wakes up one day to a cute shinigami, asking him to name his dying wish. Luckily for him, she's new at the job, and messes things up. Now, instead of being dead, he makes a team with the shinigami Kiriko and helps grant the last wishes of people who are dying.

Serialization:

Aida Shizuka is three days from being executed for cruelly murdering his family when a shinigami comes to visit him. It's his little sister Hibiki, who has come to make sure his soul goes to hell! Hibiki has another job on this trip as well, granting the final wish of a girl with heart disease, and she drags her condemned brother along with her. Soon, it becomes apparent that people are not as simple as they may seem, and even Shizuka's guilt is uncertain. Hibiki and Shizuka promise to search together for the truth about their family's death, and they won't let life, death, or trouble in the afterlife get in their way!