"Orange" is a 13-episode anime series based on the manga by Ichigo Takano. The story centers on Naho Takamiya, a high school student who receives a letter from her future self, warning her about the regrets she will face if she does not change her actions. The letter provides detailed instructions to prevent the tragic death of Kakeru Naruse, a new transfer student who joins her class. Kakeru, burdened by guilt over his mother’s suicide, struggles with depression and self-blame, which leads to his eventual demise in the original timeline.

Naho, along with her close-knit group of friends—Hiroto Suwa, Takako Chino, Saku Hagita, and Azusa Murasaka—works to support Kakeru and alter the course of events. The group’s dynamic is central to the narrative, as each member plays a role in helping Kakeru confront his pain and find hope. Suwa, in particular, harbors feelings for Naho but prioritizes Kakeru’s well-being, showcasing his selflessness. The letters from the future reveal that Suwa, in the original timeline, also carries regret for not being able to save Kakeru.

As Naho follows the instructions from her future self, she begins to develop feelings for Kakeru, complicating her relationships and decisions. The series explores themes of friendship, love, regret, and the impact of small choices on the future. The narrative alternates between the present and the future, showing the consequences of the characters’ actions in both timelines. The future timeline depicts the group as adults, still haunted by Kakeru’s death and reflecting on what they could have done differently.

The story delves into the emotional struggles of its characters, particularly Kakeru’s internal battle with guilt and depression, and Naho’s growth as she learns to assert herself and take responsibility for her choices. The series balances its heavier themes with moments of warmth and camaraderie, emphasizing the importance of human connection and support. Through its dual-timeline structure, "Orange" highlights the fragility of life and the power of second chances, offering a poignant exploration of how individuals can shape their futures through their actions in the present.