At a certain high school in Karuizawa, students relied on ordinary local trains for their commute, but with only seven trains running per day, missing one meant spending two or three hours killing time in town. This sparse train schedule on the Shinetsu Main Line

To solve the mystery of a murder of an old governess which takes place at a wealthy Daidoji family's country estate, family secrets and lies dating back several generations must be sorted out once and for all.

A girl suffering from an incurable disease get in a coma, while her boyfriend visit her to the hospital, she visits the beyond.