Sora and Suiko were in the same astronomy club in college. They were interested in each other, but even after they became working adults, there was no particular progress in their relationship, and they continued to meet a few times a year, using observation meetings as an excuse. Then, at the annual observation meeting, the atmosphere became good as they talked with each other... Huddled together under the cold sky with the constellations twinkling, the two decided to confess their feelings...