Dark Berserker: Rise of the Forgotten Progenitor - Chapter 6: Affinity :Decay!

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

Somehow, I ended up possessing a character in an academy setting.“Our school has a strict no-alcohol policy for students.”“Huh?”I’m a Drunken Fighter who gets stronger the more intoxicated I am, but alcohol is banned.

I opened my eyes to find myself in another world. For some odd reason, I ended up as a sword. Before my eyes laid a plain full of magic beasts, and so, I launched my body and flew in search of a partner, a wielder (females only). Wait. Absorbing magic stones gets me skills? Oh hell yeah! This be fun! More, more, give me more! Gimme all your magic stones! Okay, yeah no, but I am accepting anything anyone’s willing to give. This tale is one that follows your everyday nerd, normal as could be, save for the fact that he happened to reincarnate as a sword.

Arthur is an Atelier who works under pressure. When the curse of the Succubus activates his Netori System, Arthur is unable to resist his desire to win a woman's loyalty. There is no other reason for him to test a woman's loyalty that is easily shaken when his Netori System is activated.