This is so there is no confusion, and so you guys don't keep asking about plot holes
This will be updated erratically because I'm just like that
Beel is the decendent of the original Beelzebub and younger (but far more powerful) brother of Shalba and En as well as a super devil.
Shalba's kind of the black sheep of the family, which is why he was never mentioned.
Beel's father didn't participate in war between the Old Maou Faction and the Anti Maou Faction.
Oga replaces Issei, but does not have Boosted Gear (he's already got Beel, What more does he need?). But don't worry boosted gear will come in the story.
The Solomon Company is working with the Khaos Brigade.
The 72 pillars that Oga and the others fought were just a bunch of reincarnated and/or extra devils using their names that Behemoth assembled. Behemoth and Jabberwock were the only once using there actual titles
Lucifer is Vali's half-sister who disappeared before contracting Takamiya.
Not as ecchi as canon(I mean seriously if Oga got into those situations he would just have a mental breakdown and run away as fast as possible, like he did when Hilda lost her memories).
Power levels:
Average low class devil - Himekawa, Kanzaki, Aoi
Average mid class devil - Oga, Tojo, Aoi with Kuma, Yolda, Sachura, Isabella
Average high class devil - Oga (super milk time), Hilda, En, Saotome, Three Kings
Average ultimate class devil - Oga (daddy switch), Behemoth, Jaberwock, Three Beasts
Average Moau class devil -Beel's father
Average Super class devil- Beel
Now let's start this thing!