Digital Delicacy (SaMS SolarMoon Ship)

(This is a human au btw, and in Solar's POV the whole story)

Solar, a man with a knack for design and mechanics, is living in a dimension different from his own. There resides Moon, whom is also very skilled with mechanics and engineering, along with his siblings. Solar has found a new, much better home here.
But everything changes one night, when Moon stumbles through the door