This started out realistic, but these last two fights are just so unrealistic. How the hell does a boxer lose against and amateur whose main trick is change of pace? Just because you beef up and lift weights does not make you a harder puncher either. This is getting to shounen level fights.
wait, where have you been all this time? the fight scene in this manga have always been ridiculous lmao, just look at how tanzawa fight with the oldest brother in bakurakan arc, make you question the demographic of this manga