Taken from Baka-updates:
Hayama Makoto is tormented by sightings of Shinigami(*), Asano Mitsuki dwells on his dead sister’s shadow, and Koumoto Yaeko longs for the love of her life―these are the heart-rending yet tender tales of the people whose thoughts dwell on life and death, and of the white Shinigami Momo.
(*)Shinigami, 死神 is the Japanese word for “Grim Reaper“ and literally means “god of death“.