Toaru Majutsu no Index: New Testament - Volume 8, Epilogue: Lance. Lance_of_"Gungnir".

Zhou Yu, a reclusive otaku who did not like to go out of his house, was one day forced out of his house by a series of unexpected events.

【Infant Stage, a cumulative total of 10,000 leg kicks】【Attribute gained: Use It or Lose It】【As long as you continuously exercise the same body part, that part can evolve infinitely, but it can’t break the limits of carbon-based lifeforms】【……】【Student Phase, a cumulative total of 100 million characters read】【Attribute gained: Heavenly Intellect】【Photographic memory, learning ability reached the pinnacle of humanity】【……】【Adult Stage, a cumulative matching of carbon-based lifeforms’ limits 100 times】【Attribute gained: Multi-form】【The body is no longer limited to the frailty of carbon-based lifeforms’ flesh and blood, capable of evolving beyond life forms】【……】Having transmigrated, Lin Zichen was born with an achievement-based cheat.In this life, he only wanted to evolve quietly, continuously breaking through the limits of life forms, and savoring the pleasure that comes with the leveling-up process.

Collection of short stories.

- Description from Novelupdates