
Growth Process is a bonus chapter released with Volume 16 of One-Punch Man. It turns a small convenience-store scuffle into a quiet study of ambition, contrasting two low-ranking heroes as one chases danger and the other wrestles with envy.
Eyelashes and Glasses put a stop to some criminals at a convenience store, then fall into conversation about where each of them stands. Eyelashes compliments how far Glasses has come, but Glasses brushes the praise off, insisting he still has plenty left to work on.
A distant blast draws Glasses toward the trouble. Eyelashes tries to hold him back, doubting he can face the monster on his own, yet Glasses restates his determination to grow and heads off anyway.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
Growth Process follows Eyelashes and Glasses stopping criminals at a convenience store, then contrasts their ambitions as Glasses heads off alone toward a distant monster attack.
In Growth Process, Eyelashes tries to hold Glasses back because he doubts Glasses can face the monster alone, but Glasses restates his determination to grow and heads off anyway.
Left behind in Growth Process, Eyelashes phones Fubuki to report that a hero is already at the scene, watching Glasses go as jealousy quietly settles over him.
Growth Process was released with Volume 16 of One-Punch Man on April 4, 2018.
The chapter Confidence immediately follows Growth Process in the One-Punch Man manga.
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