Isnt it funny how one single moment can change your life forever? MxM

Secluded from the rest of society, the residents of the Tower take it upon themselves to protect their world from the many monsters inhabiting eir routine is suddenly thrown astray as a stranger appears to save them.

Among the last of your kind and hunted. How long will you last?

What happens when you're reunited with the one you thought you'd lost forever? (I suck at summaries sorry)