Where does “超現実的” come from?

超現実的 (Japanese) comes from Japanese 現実的, from Japanese 現実, from Middle Chinese 現實.

Ancestry of “超現実的”, step by step

Step	Language	Word	Meaning
1	Japanese	現実的	—
2	Japanese	現実	reality
3	Middle Chinese	現實	—

超現実的 — Etymology, Origin & Word History | Etymology Explorer