I Kept Pressing the 100-Million Button and Came Out on Top
Synopsis. Even though he practices all day, Allen Rodol is on the verge of flunking out of Grand Swordcraft Academy due to his total lack of talent, and to get matters worst class prodigy challenges him to a duel where it’s win or face expulsion. However, the night before his duel, a mysterious hermit grants him a button that will give him one hundred million years to train in an alternate reality when pressed. Allen with all his doubts presses that button, after experiencing it's effect  he kept pushing the button many times. Now with over a billion years of straight practice under his belt, the world is about to see what the “Reject Swordsman” can really do! Media. Light novel. The light novel series is written by Shuichi Tsukishima and illustrated by Mokyu. It began serialization online in February 2019 on the user-generated novel publishing website Shōsetsuka ni Narō. It was later acquired by Fujimi Shobo, who have published nine volumes since October 2019 under their Fujimi Fantasia Bunko imprint. The light novel is licensed in North America by Yen Press. Manga. A manga  adaptation with art by Shidō Yuutarō has been serialized online via Kadokawa Shoten's "Young Ace Up" website since February 2020. It has been collected in three "tankōbon" volumes. The manga is also licensed in North America by Yen Press.