"I was always thinking about you, Airi." Motoki continued to send emails that were never delivered to his beloved. Until one day, he receives an answer that will transform his depressive life. A unique mystery about an unforgettable "girlfriend". --- **Links:** [ComicFuzz](https://comic-fuz.com/series/2415) | [BookLive](https://booklive.jp/product/index/title_id/926770)