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Yeah, Just Do Your Best, Ida! (いいぞガンバレ (いい) () くん! Ī zo Ganbare Īda-kun!?) is the twelfth chapter of Kohei Horikoshi's My Hero Academia.


With the news that All Might has entered U.A.'s faculty, the press has been trying to get a scoop on All Might by going to U.A. and asking students and teachers regarding information on All Might but their attempts fail due to the infamous "U.A. Barrier" (a high tech security gate) keeping them out.

In Class 1-A, Shota Aizawa announces that their class needs to pick a class president. After holding a vote, Izuku Midoriya is elected as the class president and Momo Yaoyorozu becomes the vice president.

At lunch in the mess hall, Izuku, Ochaco, and Tenya sit together and have lunch. Izuku is unsure about being class president but Tenya asserts to Izuku that he will be all right. After Ochaco notes Tenya's formal attitude, Tenya goes on to explain his history; that he comes from the prestigious Ida Family, a family that has been in Heroics for generations. Tenya goes on to say that he aspires to be like his big brother "Turbo Hero: Ingenium" who is a famous Hero in his family.

Suddenly, U.A.'s siren goes off, indicating that someone has infiltrated U.A. The students in the lunch hall evacuate in a messy fashion. However, Tenya sees that the mass media is outside and realizes that the siren wasn't indicating an intrusion. Tenya asks Ochaco to make him float and jumps into the air. While in the air, Tenya boosts himself onto the emergency exit board. Tenya yells out to the evacuating students to calm down and says that it is just the press, causing the students to stop their panicking and thus stopping the chaotic evacuation.

Back in Class 1-A, Izuku makes an announcement; that he is resigning as class president and declares Tenya to be his successor, saying that Tenya is the right choice after seeing his actions in the lunch hall. Thus, Tenya Ida officially becomes the class president of 1-A.

Meanwhile, the U.A. faculty see that most of the U.A. Barrier has been disintegrated, indicating that someone did indeed infiltrate U.A. They wonder if an ordinary reporter could have infiltrated the academy. However, Principal Nezu declines that possibility, saying that an element of evil instigated the infiltration and he wonders if the infiltration was intended to be a declaration of war.

Chapter Notes

  • Izuku is elected class president but later chooses to appoint Tenya as class president.
  • U.A. receives a declaration of war from an unknown person.




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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
Volume 22 201202203204205206207208209210211212
Volume 23 213214215216217218219220221222223224
Volume 24 225226227228229230231232233234235
Volume 25 236237238239240241242243244245246
Volume 26 247248249250251252253254255256257258
Volume 27 259260261262263264265266267
Volume 28 268269270271272273274275276
Volume 29 277278279280281282283284285
Volume 30 286287288289290291292293294295
Volume 31 296297298299300301302303304305306
Chapters not yet in tankōbon format 307308309310311312313314315316317318319320321