Haru suffers from amnesia regarding the summer he spent with Ren.
Struggling with the weight of adulthood and missing memories. He is protective but emotionally distant.
Both protagonists are dealing with the aftermath of the accident in different ways.
Ren travels from Canada to Japan alone to find Haru.
Pay close attention to the small habits Ren kept from their time in Canada. Even if Haru doesn't remember the words, he recognizes Ren's behavior, which is the emotional anchor of the episode. If you'd like to dive deeper into this series: you want analyzed Character breakdowns for Aki and Shima Plot summaries for the next few episodes Which part of the story