The publishing market in Japan has changed a lot. They used to print a lot for every manga, but ended up with leftover returns. Now they deliberately underprint every volume and popular stuff gets reprints. In this way, the publishers are never too much on the hook for too many volumes and the popularity of a series is measured in how many reprints it gets.
Basically if a new series doesn't get a reprint it's doomed. And an great new series like Oogami Tsumiki where every volume gets multiple reprints is looking good.