Orange

Orange by Takano Ichigo

From Day of the River:

One day, Takamiya Naho receives a letter written to herself from ten years in the future. As Naho reads on, the letter recites the exact events of the day, including the transfer of a new student into her class named Naruse Kakeru.

The Naho from ten years later repeatedly states that she has many regrets, and she wants to fix these by making sure the Naho from the past can make the right decisions—especially regarding Kakeru. What's more shocking is that she discovers that ten years later, Kakeru will no longer be with them. Future Naho asks her to watch over him closely.

Read manga: Orange

Ano Hi Mita Hana no Namae o Bokutachi wa Mada Shiranai

ANO HI MITA HANA NO NAMAE O BOKUTACHI WA MADA SHIRANAI by Izumi Mitsu

A group of six childhood friends drift apart after one of them, Meiko "Menma" Honma, dies in an accident. Ten years after the incident, the leader of the group, Jinta Yadomi, has withdrawn from society and lives as a recluse. One summer day, the ghost of an older looking Menma appears before him and asks to have a wish granted, reasoning that she cannot pass on into the afterlife until it is fulfilled. Since Menma does not remember what her wish is, Jinta gathers his estranged friends together once again, believing that they are the key to resolving this problem. However, hidden feelings, internal conflicts, and lingering feelings of bitterness from Menma's parents result in complications for the group as they struggle to help not only Menma move on, but themselves as well.


Read manga: Ano Hi Mita Hana no Namae o Bokutachi wa Mada Shiranai