@EminaDigiCC0306 a mod came in and renamed the 3 chapters to ch. 11 - 13 because they were just 11 - 13 before without the ch. and thus got placed below chapter 1 in the index, so when you finished reading them you'd go directly back to chapter 1 - 10. Also they doubled uploaded chapter 11 so there were 2 chapter 11's that were the same exact thing.
Honestly these skeletons are cool as fuck, when they fight they fight with all their strength and wits. You can almost feel the determination rolling off of them.