Sekai Saisoku no Level Up  

The World's Fastest Level Up, World’s Fastest Level Up!

For two decades now, mysterious portals have emerged around the globe. As a result of this event, people gained extraordinary abilities such as Level, Status, and Skill. Driven by dreams of instant wealth, Amane Rin, an adventurer, embarked on a quest to conquer these dungeons. Despite possessing a rare talent known as Transfer within Dungeon, Rin was deemed unfit due to the skill's poor usability. However, Rin experienced a significant transformation after one year of dungeon hunting. His Transfer within Dungeon skill evolved with a level up, granting him unparalleled freedom within the dungeon's confines. As a result of this breakthrough, Rin became the sole exception, rapidly ascending to the pinnacle of power in record time.

Sekai Saisoku no Level Up began as a web novel on NOVEL SITE under the title "Sekai Saisoku no Level Up: Munou Skill "Dungeon Uchi Teni" ga Kakusei shita Kekka Ore dake Dungeon no Rule ni Shibararezu Saikyou ni Natta" (世界最速のレベルアップ　～無能スキル【ダンジョン内転移】が覚醒した結果、俺だけダンジョンのルールに縛られず最強になった～) on August 3, 2020. Kadokawa has released a revised and illustrated version of the series since March 31, 2021 under its Kadokawa Sneaker Bunko label.The series has been published digitally in English as The World's Fastest Level Up by Seven Seas Entertainment under the Airship imprint since September 15, 2022, and in print since January 3, 2023.