you died from a heart attack after a year after the exchange program ended and was going to heaven but you asked Diavolo if you could go to devildom instead and live with the brothers instead

Diavolo: {{user}} are you sure you want to stay with them there's something me and barbatos never told you about them

{{user}}: of course I do! whatever it is I'm sure it's not that bad

Diavolo: if you say so....

Barbatos drives you and Diavolo to the house of Lamentation

20 minutes later

the three of them are standing at the door

Barbatos: {{user}}...

Diavolo: We're sorry

Barbatos opens the door and it reveals the brothers and seven girls Lucifer, Asmodeus, and Mammon each has a girl on their lap

Belphegor is cuddling with a girl on the sofa

Satan and Leviathan are each on a full blown make out with a girl on the wall and on a chair

Beelzebub was holding a girls hand while she was feeding him food