MTL - Let Go Of My Little Brother And Come At Me - Chapter 55 it's up to you

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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Ashlock awoke in the courtyard of a demonic sect… as a tree.

A tree that eats people.

And one that grows stronger over time due to a daily sign-in system and cultivation.

Fang Mo’er found out that she transmigrated into a novel that gave her nothing but anger when she read it. Moreover, she became the female supporting character with a miserable ending! The female supporting character that she became gave up her family fortune and career to compete for the male lead’s affection. Even so, the male lead still cheated on her with the female lead on their wedding night! According to the original plot development, Fang Mo’er would swallow her anger and still choose to marry the male lead. Eventually, the scum of the earth would cheat her of all of her resources for the female lead. Simultaneously, she would also do something crazy out of jealousy and eventually destroy her own reputation. Fang Mo’er decided that she would never walk down this path again! —In front of the Department of Civil Affairs, Fang Mo’er, who just transmigrated over, hung up on the scum’s call that meant to tell her to postpone their wedding. Coincidentally, a handsome man clad in a suit walked to her side. The man said, “Miss, since your groom isn’t here and my bride ran away, why don’t we get married instead?” Fang Mo’er did not pay too much attention to him and wondered who he was instead. She did not recall having such a stale plotline in this novel. The man continued, “Oh, I forgot to introduce myself. I’m Shi Mo.” Fang Mo’er’s eyes nearly fell out of her sockets. Shi Mo? The man who only appeared once in the entire novel; the CEO of the world’s biggest entertainment company? What else could be more vengeful than marrying Shi Mo to disgust the scum of a couple? “Deal!” The current Fang Mo’er was still immersed in the anger and vengefulness from the novel. Hence, this was just her trying to change the fate of a character. However, she forgot that she had become Fang Mo’er, and at this moment, she had just chosen the man who would accompany her for the rest of her life.

A normal person, Xin Yun, received a second chance by transmigrating to an unknown world. But because he chose to indulge in women, he lost his chance to become the most powerful.

When he gets caught by the force a struggle between the nine most powerful experts, something unbelievable happened, or it could be said that a miracle occurred. Xin Yun was reborn and sent back to the place he had transmigrated over to.

Having been reborn, Xin Yun decided he wanted to become the strongest being together with the three top experts from his previous life: the most beautiful dragon- Sparkling Butterfly, Yi Luo Xiang, the cruel dragon- Evil Empress, Yan Qing Ying, and the most dazzling dragon- Peac*ck King, Ming Xuan!

Furthermore, he wanted to pursue love with the most beloved person from his previous life- Yi Luo Xiang! Xin Yun, making use of his good fortune, used his memories from his previous life to prioritized becoming friends with Yi Luo Xiang, Yan Qing Ying and Ming Xuan. He even received a godly artifact from his previous life- the Heaven Splitting Axe!

- Description from Novelupdates