Volume 3

 is the third volume of the OnePunch-Man manga series.

Summary
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Chapter list

 * 16th Punch: Passed The Exam
 * 17th Punch: Sparring
 * 18th Punch: Business Activity
 * 19th Punch: No Time For This
 * 20th Punch: Rumor
 * OPM Extra Chapter
 * OPM Special Chapter
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Release info

 * Release date: April 4, 2013
 * ISBN: 978-4-08-870724-2
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