A Summer That Won't Come Back

YU-NO: A Girl Who Chants Love at the Bound of This World · Episode 15 · “A Summer That Won't Come Back”

Takuya Arima is a young student whose father, a historian who has conducted various researches, disappeared recently. During a summer vacation Takuya receives a peculiar package from his missing father, along with a letter containing information about the existence of various parallel worlds. At...