Where does “漫畫” come from?

漫畫 (Chinese Mandarin) comes from Japanese 漫画, from Japanese 画, from Middle Chinese 畫 — drawing.

Ancestry of “漫畫”, step by step

Step	Language	Word	Meaning
1	Japanese	漫画	a drawing or painting made as one pleases without...
2	Japanese	画	picture, drawing, painting; movie, film, video;...
3	Middle Chinese	畫	drawing

漫畫 — Etymology, Origin & Word History | Etymology Explorer