One of JimmyThumb-P's most popular songs. It was featured in the albums "Reboot", "Gekkaneta Vol.02" and "Koharu Sakurai Presents EXIT TUNES ACADEMY -11th ANNIVERSARY SPECIAL-". The song has reached the Hall of Fame.
The song talks about three friends (Miku, Luka and Zimi). Zimi gives both girls a star keychain and keeps one for herself as a symbol of their friendship. One day, while walking around town, Luka shoves Miku making her drop her ice cream because of joking on each other. A furious Miku retaliates making Luka drop her ice cream. This sparks a fight between the two friends and Luka's keychain falls in the middle of the street. Running to retrieve it, Zimi is hit by a truck and dies. Miku bears witness to her death and it traumatizes her. Miku blames herself and the two friends eventually go their separate ways, with Zimi's soul unable to move on. Years pass, and Zimi's soul is slowly deteriorating but faithfully follows Luka wherever she goes. Now entering college, Luka and Zimi see a poster for the astronomy club. When they go, they find Miku there. Luka, who blames herself for Zimi's death as well and angry at Miku for abandoning her, tries to leave but is held back by Miku. The two friends reunite and they go to the place where Zimi gave them their keychains, now turned into a necklace and an earring. Zimi's soul, happy that her friends were reunited, finally moves on after thanking them. The song ends with the camera panning to the sky, where three stars, symbolizing the three friends, shine brightly.