"Ryūsei" (流星, Meteor) is a song by Japanese pop singer Eir Aoi.

[4][5] On 8 February 2018, it was announced that she would resume her activities after her hiatus with the release of the music video "Yakusoku" (約束, Promise) on YouTube.

[6][7] In June 2018, "Ryūsei" was certified gold by the Recording Industry Association of Japan (RIAJ) for 100,000 full-track ringtone digital music downloads (Chaku Uta Full).

Some scene featuring the girl running from her school to some place where the meteor and star can be seen.

The video also feature Eir Aoi singing in the music studio.