Roaring Muscles (うなれ (きん) (にく) Unare Kin'niku?) is the second chapter of Kohei Horikoshi's My Hero Academia.


The chapter begins where the previous chapter ended off, with Izuku crying in joy for having his dream acknowledged. All Might tells Izuku that he is worthy to inherit his strength, confusing Izuku. All Might says that his Quirk can be passed down and has selected Izuku as his successor. All Might tells him that the name of his power is "One For All". Izuku asks why All Might would give his Quirk to him, to which All Might replies that he doesn't mind giving it to him and because he shined more than any of the other so-called "heroes". All Might says that the decision is his to make and Izuku decides to accept All Might's proposal.

Izuku trains to inherit One For All.

All Might begins to train Izuku in order for his body to inherit One For All, saying that if he gave it to him now, his body would be blown to bits. All Might has Izuku clean the Takoba Municipal Beach Park of its trash as a great way to strengthen Izuku's body for the next ten months, as U.A. High School's Entrance Exam begins by then, wanting Izuku to become a vessel by then.

However, Izuku doesn't follow All Might's directions and overworks himself to the point of collapse. All Might scolds him but is moved by Izuku's motivation to become the strongest hero and modifies his plan to match Izuku's state.

After ten months of intense training, it is now the day of U.A.'s Entrance Exam. Izuku's body is now more refined and muscular, which causes All Might to say that he is now a genuine vessel. All Might decides to give Izuku his reward for having worked so hard for the last ten months, saying he has earned it fair and square: the One For All Quirk. All Might gives Izuku a piece of his hair to eat, much to Izuku's confusion. All Might says that it doesn't matter how he takes his DNA, but due to the Entrance Exam beginning in a few hours, he needs to inherit it immediately, because the DNA takes time to process.

Chapter Notes

  • All Might's Quirk, One For All, is introduced.
  • All Might's Quirk is revealed to be inherited as opposed to being born with it.
  • Izuku undergoes ten months of intense training in order to be a suitable vessel for One For All.
  • At the end of his training Izuku eats a strand of All Might's hair in order to receive One For All.
  • The Entrance Exams to U.A. are about to begin.

Characters in Order of Appearance


Appearances for Chapter 2

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Chapters and Volumes
Volume 1 1234567
Volume 2 891011121314151617
Volume 3 181920212223242526
Volume 4 272829303132333435
Volume 5 363738394041424344
Volume 6 454647484950515253
Volume 7 545556575859606162
Volume 8 636465666768697071
Volume 9 727374757677787980
Volume 10 818283848586878889Tsuyu's Ribbity Day
Volume 11 90919293949596979899
Volume 12 100101102103104105106107108
Volume 13 109110111112113114115116117118
Volume 14 119120121122123124125126127128
Volume 15 129130131132133134135136137
Volume 16 138139140141142143144145146147
Volume 17 148149150151152153154155156157
Volume 18 158159160161162163164165166167
Volume 19 168169170171172173174175176177
Volume 20 178179180181182183184185186187188
Volume 21 189190191192193194195196197198199200
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Volume 28 268269270271272273274275276
Volume 29 277278279280281282283284285
Volume 30 286287288289290291292293294295
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