Stargazing: Madoromi no Yakusoku - Satomi Sato, Kayano Ai
How does a nap in space sound? Aside from the complete lack of sound and breathable air, it sounds kind of magical.
It's kind of strange having a song like this close off a series that was based around mysteries and bits of suspense, but the glowing visuals mixed with the vocals of Satomi Sato and Kayano Ai gave it a strangely fitting charm. I think it plays into the mysteries of space and how we can easily get lost in a good mystery, whether on Earth or beyond.