Journey to Hiroshima

Overview

To spend the summer vacation, junior high school student Kazuki rides a bullet train to Hiroshima to stay with his aunt. Upon arrival in Hiroshima, his aunt narrates the tragic past of what happened the day the atomic bomb fell. From the aunt, who had to overcome a lot of hardships, Kazuki learns the value of peace and how to have the courage to lose.

Source: AniList