Glitter or Kirakira (きらきら) is the second ending song to Space-Time Detective Genshi-kun, sung by Manabi Mizuno.
TV size video synopsis
The ending animation shows a solar eclipse over Tama City, and Sora sitting by the river, looking sad and depressed (and possibly crying) for unknown reasons. As the eclipse ends and the sun comes out, Genshi, Tokio, and the Time Shifters arrive, and each offer Sora a handkerchief, and she immediately cheers up. Sora, now happy again, stands up and overlooks the river now sparkling with sunlight, and raises her hands towards the shining sun. The video can be seen here: https://www.youtube.com/watch?v=v1l0CzcqosM