sense of reality
Refers to the feeling that something is real or the perception of reality. Often used in contexts discussing virtual experiences, mental states, or the believability of a situation.
VRの映像は現実感がすごい。
The VR visuals have an incredible sense of reality.
彼は現実感を失っているようだ。
He seems to have lost his sense of reality.
Compound of 現実 (reality) and 感 (feeling, sense).