SWNOVELXO 
Yoruha transmigrated into the world of Naruto and became a student at the Konoha Ninja Academy. He was bound to the AFK System:
[You AFK for one day: Extract chakra, breakthrough chakra limits!]
[You AFK for one month: Master taijutsu, comprehend the Eight Gates, and achieve the title of Taijutsu Grandmaster!]
[You AFK for one year: Master ninjutsu, uncover the mysteries of ninjutsu, and surpass the Kage-level limit!]
[You AFK for three years: Grasp the secrets of Yin-Yang Release, turn illusion into reality, and forge the perfect Sage Body!]
Chakra, taijutsu, ninjutsu, kekkei genkai...
No hard work was needed—just AFKing to grow stronger!
One day, when Yoruha stepped into the Six Paths realm, the ninja world was shaken to its core.
Even Jiraiya was stunned:
"You’ve never trained, yet your ninjutsu is so powerful. How did you do it?!"
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RAW: 火影：挂机就变强
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For advanced chapters:
[email protected]/ChakraMaster
Naruto: AFK System novel is a popular light novel covering Anime & comics genres. Written by the Author ChakraMaster . Read Naruto: AFK System novel online for free.