Naho Takamiya

Naho Takamiya is the main female protagonist in Orange.

When she receives a mysterious letter from the future involving Kakeru Naruse, she and her friends try their hardest to fulfill the demands of the letters.

Appearance
Naho is a cute and beautiful teenage girl who stands at average height.

She has light brown hair that reaches to her upper back with bangs swept to the left and big hazel green eyes.

In the future time-skip, she's seen to have grown taller and her hair is also shown to be longer. The ends of her hair are noted to be wavy and curled.

Personality
Naho is introduced as a kind, loving, passive, but shy girl.

Although Naho isn't the type of person who expresses her thoughts often, even when in the face of her friends, the reason behind her passive nature is simply due to not wanting to hurt anyone, much less confuse them. Which explains why she can't bring herself to be upfront about her own thoughts and feelings, especially when it's towards Kakeru.

Despite having the inability to speak her mind, her feelings for those she cares about are strong and passionate, even if she doesn't show it.

A comical trait about Naho is when she has a tendency to scream when she's prone to nervousness or embarrassment.

Plot
At the start of the anime and manga's serialization, Naho receives a letter that was written from her future self.

At the point when she goes to school, in which she opens up the letter and reads it, she becomes skeptical about it.

However, as soon as when she starts to realize that the letters were coming true with each passing day, that's when she and her friends must prevent the untimely death of Kakeru Naruse.

Hiroto Suwa
In the current timeline, Suwa and Naho are best friends. Suwa is shown to have feelings for Naho, but she doesn't feel the same way. She is not aware that Suwa has romantic feelings for her. He looks after her and stands up for her whenever she is bullied (such as being bullied by Rio Ueda and her friends).

After receiving the letter and realizing that the letter's contents are true, he puts Naho and Kakeru's feelings before his own and supports Naho and Kakeru in getting together. He, along with Azusa Murasaka, Takako Chino and Saku Hagita, help Naho and Kakeru get closer and help to prevent Kakeru from committing suicide.

In the alternate timeline, ten years into the future, Suwa is married to Naho and they have a child. He regrets not telling Naho that Kakeru had a crush on her ten years ago. He believes that if he had done so, Kakeru might not have committed suicide. Thus, he, like Naho in the alternate timeline as well as Azusa, Takako and Hagita of the alternate timeline, sends letters to their past self to help prevent Kakeru's death.

Kakeru Naruse
Kakeru is Naho's love interest as well as a close friend.

Kakeru is a transfer student from Tokyo. On his first day in his new school, Azusa Murasaka, Takako Chino, Saku Hagita, Naho and Suwa decides to invite him to walk home together after school. During the outing, Azusa brings buns from her family bakery to share with them. Naho, not wanting to upset anyone, says that she doesn't care which type of bun she gets, though she actually wants a curry bun. Kakeru notices this and trades his curry bun for her melon bun.

Kakeru started dating Rio Ueda after she confessed to him, which made Naho very upset and he initially asked Naho for her opinion on whether he should go out with Ueda by writing on a piece of paper and placing it in Naho's eraser that she lent him. In the alternate timeline, Naho did not notice it. However, after reading the letter, the current timeline Naho read the paper that asked her about whether he should go out with Ueda. However, she had no time to respond to him due to class cleaning. She rushed to scribble, "NO" on a scrap of paper and placed it into Kakeru's shoe in his shoe locker before walking back to class.

When she returned to class, Azusa, Takako and Hagita were standing by the window, watching Kakeru give Ueda-Senpai his answer. Naho sees Ueda-Senpai walk away with a smile on her face and when Azusa shouts to ask about his answer, Kakeru replied, "yes". This made Naho sad and she leaves the classroom.

Ten years later in the main timeline, Naho and Kakeru are now married (which now makes her Naho Naruse) and they have a son together.

So Suwa writes letter to correct what he did thus Naho and Kakeru end up together with a child in an alternate universe.

Trivia

 * The name Naho means "summer" (夏) (na) and "sailboat" (帆) or "grain" (穂) (ho).
 * Naho's surname Takamiya means "tall, high" (高) (taka) and "temple, shrine, palace" (宮) (miya).