>Mana Transfer

As a professional adventurer, leaving that ball annoys me.

Thanks for the translation!
Looking forward to the next chapter. Bad ball, doesn't it know it's not suppose to make loud noises or cause a ruckus in a library? Would be nice to see what he comes up with if he does tailoring quests. He should make more empty skill balls and tell sisters he can make them. Considering thread probably be a great way to make money quick.

"And here I'm just relieved because the hole is big enough for me," he thinks with his face about a foot away from one of the sister's lower half.

"Why can't humans just leave me alone […]" Instead of "Why can't just humans leave me alone […]".

Unless it was meant as Just in the sense of justice. In which case, carry on.

I feel bad for that ball.(