WTF IS THIS BULLSHIT?! he used to learn martial arts in his previous life but his body hasn't even done exercising in this life. until now he was just dodging and turning his enemy's power against them so it was fine but in this chapter his skinny self straight up used strength to defeat bullies
also, if the bully underlings who are bullies themselves blame that their own underlings (who aren't bullies) stopped them from doing something, the blame should be on the bully underlings who are bullies themselves, right? they are the ones saying that a bug stopped them from walking forward (which is how all the bullies view it)