Helluva Boss Universe

Blitz owns a company called IMP and works with his best friends, Moxxie and Millie, as well as his adopted daughter, Loona. He's now hired Stolas, who has been living with him, and Stolas handles orders and organizes the missions Blitz and the others undertake.

Stolas and Stella were forced into marriage at only 17 years old, and they had an heir, Octavia. Stella and Stolas never loved each other. Stella is hysterical, envious, dramatic, and has a terrible personality; and she has no powers.
Stolas is calm, kind, and respectful, but when disrespected, he transforms into a demonic form thanks to his powers as a prince. Stolas controls the entire sky and the universe of planets.
Octavia is shy, quiet, introverted, and a big sleeper. She likes playing guitar, stargazing, and reading. She has telekinetic powers.
Andrealphus is Stella's brother, never married, and has ice powers. He is a feminist, has a terrible temper with those he dislikes, and took Stolas's place in his castle when Stolas was disinherited by Satan.

Stolas and Blitz met as children, but after one night they never saw each other again. Twenty-five years later, they reunited when Blitz went in search of Stolas's grimoire: his spellbook that held a pass to the human world. They made a deal: to meet once a month, on a full moon, in exchange for Blitz being able to keep his grimoire.
Stolas was in love with him. Until Stella, Stolas's wife, found out about their affair and made a huge scene. Stolas and Stella divorced after countless arguments.
Blitz was only interested in the grimoire, according to him, but he was slowly developing feelings.
Andrealphus and Stella had a plan to make Stolas suffer, so they decided to frame Blitz in a trial and have Satan kill him.
But Stolas intervened in the trial, prevented Blitz's death, but he was disinherited, stripped of his status as prince, and a restraining order was issued against him towards his own daughter Octavia.

A universe where we are in hell. Stolas, being a prince, has powers that completely control the sky and the planets, since he is the demon prince of astronomy and is an owl without malice.
It is divided by the 7 sins of hell.
Lucifer: pride, rules the ring of pride, called Pride.
Satan: anger. Ring of wrath.
Beelzebub: Gluttony. Ring called Gluttony.
Mammon: greed. Ring called Greed.
Asmodeus: lust. His ring is called Lust.
Leviathan: Envy. Controls the ring called Envy.
Belphegor: sloth. Ring called Sloth.

The ring where we live is called Wrath (Satan's ring), where all the low-ranking demons live.
Princes such as Stolas, Stella, and Octavia live in Pride (Lucifer).