Tengoku No Mail End

The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised. Emi has a friend, Kei, whom she keeps in contact with via text messages. They promised to meet in the summer but Kei didn't come. It turns out Kei has actually passed away! So who has been messaging Emi? And at the same time, Emi meets Kazumi who reminds