Story: 10/10 Despite being a shojo orange breaks from the typical high-school romance. Naho, the main character, receives a letter from her future self, in this letter there are instructions to save the life of her new classmate, Kakeru. The romance between Kakeru and Naho is evident, but the story goes beyond that and sends a very nice and helpful message: to never miss a chance to do what you have to do, to depend and to trust people and overall making the most of your life. Art: 10/10 Tha drawing style of Ichigo Takano is truly beautiful. Character: 10/10 Naho is shy and indecisive but it's herpersonality what helps the story to develop.
Kakeru is a very nice and complex character.
Suwa is definitely my favourite character from this manga, he is kind-hearted and a great friend for both Naho and Kakeru.
Hagita, Azu and Takako are the comic relief, specially Hagita.

All in all I think all these are characters are lovely and each of them contribute to the story.

Enjoyment:10/10
The story is quite sad, and there are some moments you can definitely shed some tears, but nevertheless it has a very beautiful message.

Overall: 10/10
Great story, beautiful art, well written characters and a nice message. Orange is definitely a manga everyone should read.