Loser System and Berserker Me - Chapter 1: Let’s Just Toss A Guy In

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

Having the capability to destroy humans, elementals, and gods, after a long period of countless wars and strife, Arnos the demon lord became sick and tired of all that and longed for a peaceful world, so he decided to reincarnate to the future.

However, what awaited him after his reincarnation is a world too used to peace that his descendants became too weak due to a huge weakening in magical powers.

Arnos enrolled in the Maou Academy established to find any students that might be the demon lord’s reincarnation, but his powers are too extraordinary that those in the academy couldn’t properly judge his powers, so he’s regarded as an “Inept student”. Being underestimated and avoided by most people there, he recruited a girl friendly to him, Misha, as his subordinate and comrade, and strives to climb to the top of the demon race hierarchy to one day reclaim his former title and status.

“Han… Yi Jin? The dual-class loser villain bastard, Han Yi Jin?”Han Yi Jin had reincarnated as an insignificant villain in a male-oriented modern fantasy novel.Han Yi Jin, the small-fry villain who hung around the main character, Kang Yoo Hyun, and died at the beginning of the story.“Aren’t you acting a little strange today?”“What’s strange? F*ck off if you don’t have any business with me.”To avoid suspicion, he acts like Han Yi Jin from the original story. This rather attracts the attention of the gongs, and Yi Jin is looked upon with suspicion.[Synchronisation is complete.] Shake the Catnip (S): All stats of the designated opponent +20%In the meantime, he had acquired the “Catnip Skill” from nowhere.Because of this skill, which becomes more effective the higher the intensity of the skinship, Yi Jin begins to attract the obsession and interest of the other characters…“I love it when you curse.”“Hyung, would you like to go out on a date with me?”“You wouldn’t think of that if I cut off at least one of your legs.”“Keep running away like that. I’m curious how far you can go.”These crazy bastards are obsessed with me.“Why are you all staring at me with those eyes? Get the f*ck out of here, you crazy bastards!”Will Yi Jin be able to escape safely from the clutches of the gongs?Will he be able to escape death?

A god of a different world had abruptly appeared in my classroom and semi-forcibly summoned the entire class to his world.ーーーーexcept for me, Kamiya Yato.