It took me way too long to figure out you mistyped Gen there... Slow Kato is slow today.
But what creepy mouth scar? I mean, yeah, the last panel is genuinely disturbing but I don't see a particular mouth scar. Somewhere else?

Also, I forgot, considering nobody made a sewing machine... This is some crazy tailoring there. (seriously, make a sewing machine, it's not much harder than a loom... Is it?)