hai yo - susumu hirasawa (slowed + reverb) 

Slowed version is a banger

This song is in guts,s head when he's fighting

I'm truly speechless it is a masterpiece🍷🎩

thanks susuma hirosawa

Final boss song indeed

Listen from 1:45 and when it hits 1:53 start doing this Just speak in your mind "A fellow Struggler .....(try remembering struggles and hardship you've gone through)......(then review your goal)" This would tear up your eyes.

Thats my favorite music

It’s not Susumu Hirasawa it’s Shiro Sagisu. Susumu Hirasawa composed other music