MTL - Transmigrating into the Reborn Male Lead’s Ex-Boyfriend - Chapter 1 A big brother

First World : CampioneCurrent - Second World: High School DxDThird World: ???Reincarnated into the world of Campione! Haru Kasugano, our hero slays gods and ascends as the mightiest Godslayer. He battles powerful God-Kings and Campiones, claiming victory after victory. Whatever it is. [Wealth, Power, Beauty] he has it All. Watch him grow stronger as he travels into new realms like High School DxD and the Fateverse, leaving a trail of defeated gods and captivated hearts in his wake.

Karnak, a human born as an illegitimate child in a fallen aristocratic family, rose to the transcendent rank and became the Death King. Even god couldn’t contend with him.However, after becoming transcendent, he missed his human emotions, such as satisfaction and other things.So, with his oldest friend and second-in-command, who shared his belief, he decided to return in time with Barros and start over.However, something seemed wrong with this timeline.Now is the beginning of the new adventure of the Death King Karnak.

I, an ordinary high school student, Kimizuka Kimihiko, who easily gets involved in things, was appointed to take care of mysterious attache cases by mysterious men in black suits. After meeting a beautiful angel-like detective girl, named Siesta in a hijacked plane, I became her assistant.

And from there–

[You deal with the beehive, and I’ll restrain the enemy.] [Don’t make plans that make me the victim.]

We had those kinds of foolish conversations, all while being completely broke every day and fought against . Even when there were hurricanes, the weather-beaten duo sleep past it. Sometimes when we saved money at a casino, we would jump around on the beds at a resort hotel, only to be broke again the next day. We would walk through deserts, traverse through jungles, conquer mountains, cross oceans– The great detective and her assistant would go through these dazzling adventures–

Until she died.

And this story starts from 1 year after that incident.

I’m the only one who’s left, but I carry on her remained wishes.

This story is far from over..

After the sudden death of her parents, life hasn't been easy for Allynna Frost. The worst blow comes when she discovers she was adopted, leaving a big question in her mind: “Why did my birth parents leave me on this island?”A young nobleman suddenly enters Allynna's life, offering help in finding her birth parents. She accepts his offers.Meeting this man reveals many dark secrets from her past, things related to her life and death.*****“Miss Allynna, would you like to know your birth parents?” The mysterious man's cold and emotionless voice brought her out of her thoughts.She immediately nodded, agreeing with his offer.“But, I have two conditions.” He said coldly.Allynna silently took a deep sigh. Her witty mind knows it! There is no such thing as a free lunch in this world.After a few seconds of silence, she bravely asks him, “Conditions? I need to know what they are first before I can say anything. So, what are the conditions?”The man stood up from the sofa gracefully. His long black coat hung down to his knees as he stood majestically towards the large window pane. He looked at the scenery out of the window with his back facing Allynna.“First, you need to move to the Capital.”“Second. I want you to marry me willingly.” He said without looking at her.