This story is based on the vocaloid song called 'Reboot'. Its about three best friends Ritsuka Yurizawa, Miyuki Akimi and Kanade Saya.They are very close. Once Ritsuka gifted her friends a star keychain and they all loved it. The keychain marks their friendship and they think they will stay friends forever..... but.... A tradegy happens which breaks their friendship..... So what will happen?? What is the tradegy? Will they be friends again? Or Will fate not let them stay together.