Giovanni's Island
ジョバンニの島 (original)
In the aftermath of the most devastating conflict mankind had ever experienced, the tiny island of Shikotan became part of the Sakhalin Oblast... and on the unhealed border in this remote corner of the world, friendship among children from two different countries timidly blossomed, striving to overcome language barriers and the waves of history. Inspired by true events.
Starring Masachika Ichimura, Polina Ilyushenko, Hiroshi Inuzuka, Saburô Kitajima, Tatsuya Nakadai, Yukie Nakama, Junya Taniai, Kanako Yanagihara, Kota Yokoyama, Yusuke Santamaria
It's a animation and drama movie, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Ireland.