It's Actually Not Easy Wanting to be a Supporting Male Lead - Chapter 15 part10

Due to the machination of her boyfriend (Yi Jinxi) and “bestie” (Zhong Yi) , Xu Luosang who used to be a noble lady of a rich family was reduced to hiding her identity in order to rise up again. Her fiance put her father in jail and all that love turned to hate. So she lies about her age, hides her beauty and starts working as a carer in order to regain her power so she could save her father.

Our story begins with her nursing Nian Junting, a high-handed and narcissistic president, who suffered an accident and is unable to move and also unable to get it up. Being a man-child, the words he says are always the opposite of what the other party wants.

She thought their relationship was nothing more than a deal, so she left continuing her plans in her revenge, but time proved that he really loved her. He kept pestering her shamelesly, even obtaing a marriage certificate. His righteosness and fairness charmed her in time…..but will he make her fall in love again?

His sister: “Luosang must have reaped a significant amount of bad karma in her past lives to have been fancied by her brother.”

Him: “If I make Zhong Yi fall into the water every day, will you kiss me and feed me every day?”

Luosang’s mouth corners twitched slightly. ‘Really? Are you jealous of a dog?’

- Description from Novelupdates

Birth rates are decreasing. Hope is vanishing. The world has gone gray.Humanity, drifting in quiet collapse, receives an email.Every person on Earth. Simultaneously.The Aegis Mandate.Disguised as a cosmic aptitude test, it triggers The Incident of Separation—a global psychic cataclysm that erases identities, wipes memories, and divides all survivors into three factions: Law, Neutral, and Chaos. Overnight, cities become battlegrounds. Apartments become dungeons. Ordinary people become monsters—or the ones who hunt them.Ragnar Vhagar was just a loner university student. Now, thanks to a system he didn’t ask for, he’s a newly minted Demon King, locked in a crumbling apartment with goblins under his sofa and a glowing soul crystal next to his frozen peas. His new job? Build a deadly domain, defend it from invading “Heroes,” and somehow level up fast enough to not die.Alongside him is Isabelle Thorne, a razor-sharp warrior of few words and one very sharp sword. Their reluctant alliance, born in blood and snark, evolves into trust—and maybe something dangerously close to affection—as they rise together through the layers of the game-like world they’re trapped in.With each conquered domain and defeated boss, Ragnar realizes the truth: the dungeons aren’t meant to crown a winner. They’re meant to break the players. The Law faction wants control. The Chaos faction craves destruction. But Ragnar? He wants something they’re all too afraid to say out loud:Freedom.In the ruins of Kanta’s ogre stronghold, Ragnar and his misfit warband take their biggest step yet—claiming a kingdom, unifying a fractured system, and preparing for what comes next. The Heroes are watching. The gods are stirring. The world is watching a war.And somewhere deep beneath it all... Ragnar is rewriting the rules.

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates