Shinda Hazu no Kanojo ~Kanojo de Nai "Nanika" ni Okasarete~

Shinya Miura, who works in the city, lost his beloved girlfriend, Risa, in an accident two years ago. One summer day, when Shinya returns home from a Bon vacation, his friends and Risa's parents, have the illusion that Risa is alive. As if her death had never happened. [Translated from DLsite]