Always be four (Warhammer 40k highschool dxd crossover)

(This story was me losing a bet in a game to a friend who will not be named for privacy)
(Four bodyrooms 'remake' if you wish to call it such)

Tzeentch god of change and sorcery...
Khorne god of blood and war...
Nurgle god of decay and pestilance...
Slaanesh god of vice and excess...

The four are the gods of chaos, powerful in their own rights, old as time if not older, beings that can rip the universe in half if not for the great game. Now find themselves sharing a vessel, a mortal vessel, a HUMAN vessel. The four unaware of how they ended up in such a state the four are surprise to learn they somehow wound up in the 21st century Earth before the Imperium's rise. What shocked them even more is that HE is no where to be seen leaving this Earth, the blue jewel they been seeking to be claimed for countless eons right in their hands. Yet they are trapped in a highschooler student who is the unwilling servent of a lowly 'devil' after a accident where she now claims him as her own.

At least their new hoist seems to share their unwillingness to be apart of some devil peerages whatever that is. They must be careful for in this new game they find themselves in, both the gods themselves and the mortal who is more than willing to gain his freedom.