Vongola's Distant Echoing Truth

There were three guardians other than the seven of Vongola; three that, even loyal, came and went when it pleased. They loved the sky just as much as the other elements. The Stars that are the guiding lights. The Moon that stands even unseen. The Comet that waits to bring a new age. How will the Decimo fair with their return? Possible yaoi, OMC centric, DON'T LIKE, DON'T READ.