"Instant" (一瞬, Isshun) is the twenty first volume of the One-Punch Man manga series.
Summary
Featured Characters
Featured Characters
Extended Covers
Volume 21 features extended front and back covers.
Trivia
Buyers of the Volume will have a chance to win a T-Shirt with the Volumes 19-21 cover spreads printed on it, with a total of 500 winners.[1]