MTL - I Was a Top Student In Conan, But I Was Actually An Onmyoji - Chapter 123

When a glowing portal yanks Leo from his struggling existence, he is saved by a mysterious system which gifts him new chance to break free from his side character experienceRebuilding an abandoned guild to honor his family’s legacy, Leo finds himself under the evil eyes of monsters, both from humanity and the gates he ventures intoin short : overpowered necromancer building a guild.

Grounded in the Transcendent, framed by the Sequence, the Wizard ignited the Source Energy and spewed out a mist of Origin Energy.The roaring sound of steam echoed through the entire epoch!In the depths of shadow and the dark tide.Countless greedy, twisted, polluted, and deformed gazes were coveting this roaring new World.The World began to buzz with activity!A certain Wizard, however, was lurking silently in a corner.“I like to develop!”“Then, what is the deal with those Demon King's heads and Evil God's skeletons?”“I told you, I like to develop, and this is the fate of those who hindered my growth!!”

When an era came to an end, various forces set foot in cultivation to compete for immortality. A young boy who spent most of the time sleeping got lucky in the troubled times and became an unparalleled immortal who could cover the sky with a snap of fingers. Was he going to live forever?

- Description from Novelupdates

Aelock, proud of belonging to a prestigious noble family, falls in love at first sight in a chance encounter with Klopp, who belongs to a lower-ranking noble family. Aelock approaches him without paying any mind to the difference in wealth and status, even disregarding the taboo of alpha-alpha relationships. However, Klopp takes no notice of him and marries another omega.