How come the celestial technique I stole is so powerful?! - Chapter 15 - : Test Arena 101

Jiang Pengji got something called the Court Intrigue Stream System.
System: “Your goal is to become the most prestigious woman in the kingdom (the Queen)!”
Jiang Pengji: “Okay, System. No problem!”
Years later, she met the target by becoming the most prestigious woman (the Empress).
Jiang Pengji: “Well done, no?”

- Description from Novelupdates

Ryoma Kogure, a high school student, is surprised when his childhood friend and best friend, Hirasawa Reo, who has always been popular yet indifferent to romance, suddenly confides in him about a love matter.However, when Ryouma learns that Reo’s crush is their quiet classmate, Otsuki Shizuku, he decides to help him out.While personally gathering information on Shizuku for his best friend, Ryoma is unexpectedly summoned by the school’s most beautiful girl, Asahina Alisa!She, being Shizuku’s best friend, mistakenly believes that Ryouma has feelings for Shizuku…!?Caught in Alisa’s misunderstanding, Ryoma scrambles to sort things out…As they began supporting their best friends for their own reason, Ryoma and Alisa grow closer——A romantic comedy that starts with friends supporting each other’s love!

Entering Tokyo in the bubble era, in this strange era, the only familiar ones are Matsuda Seiko, Nakamori Akina, Kudo Shizuka…

- Description from novelbuddy

“If magic is power, then I'll build my own.” - Adrian.When a genius tech developer dies from overworking, he awakens in a world ruled by magic, ancient empires, and mythical beasts.But unlike the natives who manipulate elemental mana, he is granted a mysterious technology system that lets him reconstruct modern and futuristic tech.Armed with the knowledge of his old world and this game-like system, he begins to revolutionize the magic world. But his rise threatens the very foundation of society, drawing the attention of kings, mages, and forbidden powers that ought not to be offended.As nations clash and secrets unfold, one question remains:Can technology coexist with magic… or will one destroy the other?