It's not cuts but burns.

Comments section is lit🔥🔥

@Varler
You're comment shows how low IQ you are, every 200 IQ person knows that it is customary to jerk off a knife before cooking in Japan
Smh 🤦‍♂️, dude, smh.

Its just a dumb cliche that is supposed to show how hard they worked at it. In reality they would've lost fingers not cuts

@Varler - I just had to laugh when I read your comment 😆.

@Varler they are in a world that the cold is the deadliest disease...

I never get it. How are people in manga so inept that they end up cutting up all of their fingers like that? Like, that's at the point where they must not even know which side of the knife is the sharp side.