This Japanese Monogatari Isn't Lame - Chapter 48. You don’t intend to pay?

Commandery Princess Gu Shengyin of Qinghe had died.Her beauty eclipsed Jinghua, and her talents were renowned throughout the world, yet she lost to a woman inferior to her in every aspect.It wasn't until after her death that Gu Shengyin realized she was nothing more than the protagonist of a supporting character's counterattack story, doomed to be cannon fodder for a transmigrated lady……In the pure white space, Gu Shengyin emotionlessly received the memories transmitted to her by the System…...System: “In this day and age, the supporting character must turn over a new leaf, the cannon fodder must counterattack, and the extras must make their presence felt. As the female lead, you are their biggest obstacle.”Gu Shengyin's eyes glinted with cold light. Her smile was stunningly beautiful. “Then let's see: Who, indeed, should be the stumbling block that gets kicked away, and who, in the end, will be the ultimate winner!”Those supporting characters and cannon fodders who wish to eliminate the female lead and rise to the top, have you thought about how you want to die?This story is a sweet romance, 1V1.

When the last alien on the world was bound to a stupid but cute world-saving system thinking he was a human:

A resource depleted world:

Alien: “I can help them deplete 5% of the world’s population in the short term, this way, this planet can continue to survive.

System 2d14 was frightened to tears: “No, don’t! Lord host!”

One day:

System 099 was shocked: [Lord host, the record you set for completing one’s first world has been br-broken by a rookie!]

Big boss Huo Li raised an eyebrow in intrigue: [Oh? Who was it?]

A certain alien happily thought that he was invincible among all carbon based life-forms! Until…… he met a powerful psychic ability user!

A horrified alien: “Hey! Why can’t I control myself?”

Powerful psychic controller gong x ultimate evolution of carbon-based organisms shou

Loyal dog with a strong sense of responsibility gong x always pretending to be human black belly shou

In the beginning there is a love-hate relationship and mutual dissing, later there is a pair of husbands cooperating to fight monsters~

- Description from Novelupdates

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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You can also support the Author through Patreon

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What the hell? That menace who bullied me since I was six years old, actually became a pretty girl after three years of living apart? And she even ran to our agreed duel location to confess to me, hoping that I can become her boyfriend?!

This is a plot against me! There’s definitely an enormous conspiracy behind this! I won’t be fooled by you! Even if you tear up and act all pitiful, I will still disregard you and humiliate you, until you’ve have completely paid back all my childhood grievances!

What’cha lookin’at? There are very reasonable grounds for bullying a girl!

- Description from Novelupdates