There was a mysterious old man who approached the failed swordsman with the “100 million years button”. A magic button which can achieve the same effect as training for 100,000,000 years if you push it. The failed swordsman who pushed the button had his doubts, but immediately felt tremendous power rising in his body. So he pushed the button many times. However it was a cursed button. The moment it was pushed, he was confined to the 100 million years prison of time. The first 100 years were devoted solely to training. After 1000 years he had forgotten why he swung his sword. He stopped thinking completely after 10,000 years had passed. After 100,000,000 years he became crippled and finally managed to return to the real world.
Raised by his strict family of five older sisters, Noa leaves home to become an adventurer in a faraway land. But despite being a supposed novice, he keeps shocking seasoned adventurers with incredible feats of strength and magic. It’s no wonder, really. Unbeknownst to Noa, his sisters are some of the strongest people in the world—masters of magic, swordsmanship, trade negotiations, and more. While his sisters think of Noa as worthless, the rest of the world sees him for what he truly is: a whiz! Determined to forge his own path, Noa begins his new life where he’s finally appreciated for his abilities. But what will happen when his overprotective sisters set out to bring him home? If worth is in the eye of the beholder, Noa is here to prove this whiz has been hiding in plain sight all along! *Source: J-Novel Club, Vol. 1*
Sian Burdrey was born into a big royal family and was promised his life would be a smooth sailing. However, after receiving a sacred "cup" that can only produce water at his coming-of-age ceremony, he was thought to be worthless, and got banished from the family to a frontier desert as its lord. Even though Sian hit rock bottom because he lost both his beautiful fiancée and his privilege as an heir to the throne, upon hearing the people suffering, he decides to get back on his feet and to stand up for them. Sian uses the "cup," and tries hard to revive the land. Surprisingly, it seems this "cup" can produce more than just water?! Here starts the story of a boy who was once called even worthless saves the world! (Source: Alpha Manga)
The last boss of the game “Altena Fantasia”! …Or not— I was reincarnated as one of his underling mob villains. Determined to take the place of the infamous last boss, I resolved to liven up the game as a true villain. But for some reason, all my misdeeds end up being praised, and my reputation soars…!? How did it come to this? Somebody, please tell me!! Source: MU
Tsukushi Kirishima is a born loser, a second year high school student who is mocked even by his underclassmen. He has been granted a mystery skill called "Ignore Rules," but he doesn't know how to use it, so he struggles in obscurity both as a student and an explorer. One day in a dungeon, he encounters the famous streamer Miru Ayatsuki. Miru's goal is to film the "emergency monster" that has suddenly appeared in the dungeon, but its strength poses an uphill battle and he finds herself in mortal danger! The same moment Tsukushi intervenes and comes to her rescue, the mystery skill "Ignore Rules" activates... (Source: Futabasha, translated)
Huang Tianfang, who reincarnated as the “World’s Greatest Villain” in the Chinese-style fantasy game 'Chronicles of The Legendary Sword Master', must find a way to survive. His first task to avoid the ruinous ending is to save his stepsister, Seirei, who is destined to become a seductive villlainess capable of toppling nations—!? But will Huang Tianfang’s actions, which differ from the game’s plot, start having unexpected effects on those around him...?

