Refrain Blue: Chapter 3 - Eternal Blue Waves

Kurumi’s heart was broken by the sudden death of her boyfriend in a tragic airplane accident. By melding futuristic technology with the binary equivalent of human emotion, a brilliant scientist created an ultra-lifelike robotic surrogate to take Hal’s place – and lure Kurumi from her shroud of solitude.

Moshimo, Japan. The annual fireworks festival is about to take place and a group of schoolboys, arguing over whether they are round or flat when viewed from different angles, set out to find it out.

A year has passed since Menma's ghostly return to the Super Peace Busters. Although the time they spent together during that summer was short, the five members reminisce about what happened as they each write a letter to their lost friend.

Three moments in Takaki's life: his relationship with Akari and their forced separation; his friendship with Kanae, who is secretly in love with him; the demands and disappointments of adulthood, an unhappy life in a cold city.

Upon being sent to live with relatives in the countryside due to an illness, an emotionally distant adolescent girl becomes obsessed with an abandoned mansion and infatuated with a girl who lives there - a girl who may or may not be real.