佐川君からの手紙 (Sagawa-kun Kara no Tegami)

Jūrō Kara (1940–2024) was a pioneering Japanese avant-garde playwright, theatre director, author, actor, and leader of the Angura (underground) theatre movement, founding the Situation Theatre in 1963 and performing in a signature red tent. He earned the Kishida Prize for Drama in 1970 for Shōjo kamen (The Virgin's Mask) and the Akutagawa Prize in 1983 for his novel Sagawa-kun kara no tegami (Letters from Sagawa), among other honors like Person of Cultural Merit in 2021.IMDb, APJJF.