DxD: Matsuda? - Chapter 70: King Of Kuoh Academy?

An ordinary high school boy named Max is in his basement watching porn and masturbating. When suddenly, a pop-up ad covered the whole screen!

Lu Chen had a dream, an incredibly long dream.. The dream world was familiar yet at the same time unfamiliar. Singer, actor, freelance writer, he actually went through three sections of different lives in a dream world! When he woke up, Lu Chen thus embarked on a bright road of becoming a perfect superstar!

- Description from Novelupdates

A new era of power has dawned upon the world. Mortals now wield the elements themselves through their awakened Genetic Spirits, shaping nations and destinies.But not everyone is so fortunate. Sin Clemoth Falmerdic was born with nothing—no affinity, no power, and no future. After witnessing the destruction of his city and the death of all those he held dear, he vows revenge on the veiled enemies who unknowingly left him as the sole survivor.But when Sin attains the Infinite Spirit Energy System, his journey shifts.His thirst for vengeance fuels an insatiable desire for power which eventually consumes him, driving him to rise above all who stand in his way.“There’s no peak for me. Every level brings me closer to godhood.”

Julietta, born as an illegitimate child of a nobility, is raised in an opera theatre to hide away from the eyes of the noble’s main wife.