The song “Might” (featured in the My Hero Academia 4 OST) is a slightly different version of “Might*U”, the song featured in the movie “Heroes Rising”. I mixed together these two versions along with the instrumental version of anime version(plus two short piano inserts that you can hear at 0:07 and 0:58).
This montage became my most watched video on Youtube with over a million and a half views. In that video I cut out a short section from "Might-1", so I upload here the actual "Full Mix", which is just 30 seconds longer. Enjoy this mix, finally here on Soundcloud!

Tracklist:
0:00   Might
0:37   Might*U
5:43   Might-1
7:56   Might*U

My Hero Academia

My Hero Academia OST - Might Plus Ultra (Full Mix) | Yuki Hayashi

The Spirit To Succeed

OST #2 composed by Yuki Hayashi for the Boku No Hero Academia anime!

Support the official release and buy the CD: http://www.cdjapan.co.jp/product/THCA-60099

「You Can Be A Hero」- My Hero Academia【OST】Track 2 - Yuki Hayashi

TV ANIMATION MY HERO ACADEMIA

My hero Academia OST: All Might theme Song

My Hero Academia (Boku No Hero Academia) OST
Composer: Yuki Hayashi
Release date: (2016.07.13)

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1. You Say Run

16. HERO A

35. My Hero Academia

Track 34, composed by Yuki Hayashi, from the official soundtrack for Boku no Hero Academia: Season 2

Now available for purchase:
http://www.cdjapan.co.jp/product/THCA-60162
https://itunes.apple.com/gb/album/tv%E3%82%A2%E3%83%8B%E3%83%A1-%E5%83%95%E3%81%AE%E3%83%92%E3%83%BC%E3%83%AD%E3%83%BC%E3%82%A2%E3%82%AB%E3%83%87%E3%83%9F%E3%82%A2-2nd-%E3%82%AA%E3%83%AA%E3%82%B8%E3%83%8A%E3%83%AB-%E3%82%B5%E3%82%A6%E3%83%B3%E3%83%89%E3%83%88%E3%83%A9%E3%83%83%E3%82%AF/id1274852304

「Just Another Hero」(Endeavor's Theme) - My Hero Academia: Season 2 OST【Track 34】~ Yuki Hayashi

Track 38, composed by Yuki Hayashi, from the official soundtrack for Boku no Hero Academia: Season 2

Now available for purchase:
http://www.cdjapan.co.jp/product/THCA-60162
https://itunes.apple.com/gb/album/tv%E3%82%A2%E3%83%8B%E3%83%A1-%E5%83%95%E3%81%AE%E3%83%92%E3%83%BC%E3%83%AD%E3%83%BC%E3%82%A2%E3%82%AB%E3%83%87%E3%83%9F%E3%82%A2-2nd-%E3%82%AA%E3%83%AA%E3%82%B8%E3%83%8A%E3%83%AB-%E3%82%B5%E3%82%A6%E3%83%B3%E3%83%89%E3%83%88%E3%83%A9%E3%83%83%E3%82%AF/id1274852304

「You Can Be A Hero」- My Hero Academia【OST】Track 2 - Yuki Hayashi

MayuTheUndead