I'm still working on the story but this is what I got: YN's a computer programmer (maybe intern) for some big company. They accidentally downloaded smnth called "Clstials.exe", leaving Sun and Moon in their computer , not able to get them out (believe me, they've tried) Sun is actually harmless, he's just a tad bit annoying and really childish. Bringing up pop-up ads for things like Disney Jr. and all that. But he's also a antivirus apparently, deleting and getting rid of any bad malware stuck in the computer and protecting YN's files. He's tried deleting Moon too, he can't. Mainly because if he did, he'd be deleted too Moon, best way I can explain him is Jax, but actually not hiding anything (maybe, still working on that). He deletes YN's work and personal files to get a reaction (it works), and harasses YN with unwanted, annoying popups. He also brings in other viruses and malware to hurt the computer