(Underworld midnight )
Sebastian: (slowly wakes up)
Rias: (slowly wakes up)
Akeno: (slowly wakes up)
Grayfia: (slowly wakes up)
Sebastian: (senses something off in the distance and teleports to it)
Sebastian: (shocked to see a giant black door engraved on it 666)
(Meanwhile Sebastian watching notices a army try to pry open door)
Vali grandfather: soon we will unleash the beast upon all of them!!
All soldiers laughing: (hahah)
(666 beast roaring)
Trihexa: unleash me now or else!!
Vali grandfather: not yet until I have you under my control!!!
(Suddenly Sebastian appears)
Sebastian: so Vali grandfather is behind this !!
Vali grandfather: too late it's almost done!!!
Sebastian: not quite I'm gonna stall you as long as possible!! (Sebastian unleashes his purgatory dimension and drags them in!!
(Time skip with issei and everyone)
Issei ,Kiba,gasper and all girls: has anyone seen Sebastian he just vanished suddenly after waking up!!
Everyone: no?
Sirzecks: you don't think he found the people trying to release trihexa did you?
Everyone: (just realized it and is shocked)
Sirzecks: issei can you sense him?
Issei: (tries to senses him) no I can't sorry!!
Sirzecks: we seem to be in a very bad predicament!!
Sirzecks: alright everyone go train while Sebastian is gone!!
Everyone: hai!!
(Time skip to issei and every doing meditation)
———————————————————————————
Too be continued in next chapter with Sebastian fighting against Vali grandfather!
——————————————————————————
Au : sorry for making this chapter short but I wanted to stretch the fight to another chapter!!
——————————————————————————-