The Lost Star: A Project Sekai Story

Hiroko Hanamoto used to have four childhood friends... Or, at least he thought. His childhood is mostly a blur, and he can barely remember a thing. What he can mainly remember is that an incident occurred with his family, and at some point, he ended up living on his own. He was lonely for a time, but he had his guitar to help him through it, and he also met a person who liked cute and pink things during middle school. He thought his life would return to normal, but little did he know his first friend would end up leading to way more.

This story is based on the mobile game Hatsune Miku: Colorful Stage!