A Love Through Time

when Mammon accidently goes through one of Barbatos doors trying to steal something.

he ends up in the past and meeting Barbatos who is completely different from the one he knows.

past Barbatos is a trouble maker criminal bad boy reckless and everything else the opposite of who is in future time.

after finding out mammon's situation he agrees to help him get home

and during this Mammon learns secrets about Barbatos life that nobody else knows

and gets a little to close to him