Eiga Wa Yokokuhen No Nochini Hajimaru

Kanata, living and working in Tokyo, decides to return to Kyoto when he learns that a time capsule from 15 years ago will be opened in a ceremony at his old high school. He recalls “Akane Haruta,” who passed away during his senior year. For Kanata, who was involved in the Movie Club during his high school years, Akane Haruta was his muse and first love, until she suddenly committed suicide. It turns out that Akane had put in one of the Movie Club's home-made video tapes in the time capsule, and the friends who had made the film decide to watch it together. However, there was a shocking voice left on the tape along with behind-the-scenes footage of the film's production…‼ Was Akane's death really a suicide…? Kanata, Kanata's best friend Ninomura, the actress Kaori, and the rest of his former classmates are now on the hunt for the truth of Akane's death… Will they be able to find out what really happened⁉ A nostalgic mystery that begins with the pain of lost youth and reunions.

(Source: AniList)