No idea what's going on here, but you just know Shinjiro is crying over a puppy.

Akihiko's probably like '8D Hey, wanna do a hardcore training program because of that movie?'

So Shinji is bawling because his precious Bromance is getting the shit being kicked outa him in the Ring.

Tetsamaru
Akihiko says and I quote "My desire to win against you was also one of the things that motivated me to start boxing." So before you assume he's better than Shinji. Read or listen to his conversations with Shinji first. Chapter 21 in the manga page 20.

The dog was carried away by the river. D':