Bride of the Death God manga volume 1 features story and art by Hako Ichiiro.

When a death god appears before Aibi, a girl suffering from an incurable disease, he expects her to cry and beg for her life like all the other humans he's brought to the afterlife. But she simply smiles and thanks him for coming to her. After a lifetime of suffering - and with only seven days left to live - will Aibi finally find happiness in the arms of a reaper?