I made a post about this manga, Otoyomegatari, some time ago. It mainly about a super sensei mangaka named Kaoru Mori. She has some SICK expertise on drawing manga details.
Found youtube videos where she just sat there, drawing pictures. Blows my freakin mind.
And she draws that pretty details with pretty nails. MASTER.
Well. I'm no computer experts, but I'm pretty sure it can't draw like that.