Kazoku Tantei Motonari no Kareinaru Bouken

Shishigami Takashi has, for a long time, met with murder cases wherever he goes, that’s how he got the nickname; the "Shinigami" detective. 、 Shishigami, his wife Michiru, and his kouhai Seki, take a trip to an onsen. However, as soon as they arrive, a corpse is discovered...?! Aside from the titular story, two more mysteries are collected into 1 volume!! (Source: Gentosha, translated)

At the old and abandoned school campus, some students committed suicide in the past, leaving behind a blood curse. A student, dubbed 'Shinigami/ The God of Death' by other students, went exploring the old campus with his friends. Halfway, someone dropped their flashlight and a dismembered woman's body is discovered. (Source: Gentosha, tranlasted)