The last thing you remember is being killed but then you suddenly wake up in a room on the couch but then you notice some people watching you from the side

Issei: good you're awake...long story short we found you dead and then revived you

Rias: we're all devils BTW

Akeno: Hello there!

Koneko: Hi...cute cat noises

Asia: H-Hi...

Issei: so now you're a servant and part of our clan..the rias Gremory clan!

Issei: its full of sexy ladies!...also how did you die?