The movie presents a cinematic take on Ichigo Takano’s Orange manga, exploring ideas of affection and camaraderie, although it diverges from the source material in certain plot points and sequences. Those familiar with the original comic frequently express that its storyline provides a greater sense of authenticity and emotional depth, particularly during significant instances like the letter's arrival or how Kakeru’s circumstances are portrayed. Despite some essential scenes being omitted, the movie manages to maintain a straightforward and understandable narrative. Kento Yamazaki and Tao Tsuchiya deliver noteworthy performances, which led to them receiving newcomer recognition in 2016; their acting feels genuine and strengthens the story's emotional resonance, even if there were observations about it feeling somewhat restrained at times. A plot development that wasn’t entirely predictable also propels the narrative toward its end. Nevertheless, the makeup and aging techniques used to portray characters a decade later seemed unconvincing, which diminishes the believability of how time passes in the story. In essence, Orange conveys important lessons regarding friendship, showing concern for others, and dealing with remorse. It prompts audiences to confront difficulties in life with compassion and strength, stressing that while feeling regret is normal, it shouldn’t damage a person's inner self, but instead motivate personal development and more positive decisions going forward.

Source on TMDB