You're referring to "VR Kanojo"!
In February 2017, a small Japanese development team released a title that would redefine the technical benchmarks for adult interactive media. VR Kanojo offered a simple premise: the player tutors a high school-aged female character, Sakura Yuuhi, for an upcoming exam, with the relationship progressing from shy acquaintance to romantic—and explicitly sexual—partner. While this narrative framework was derivative of countless visual novels, the method of interaction was revolutionary. Using motion-tracked controllers, players could reach out, physically touch Sakura’s hair, pat her head, hold her hand, and eventually undress and engage in simulated intercourse, all rendered in stereoscopic 3D. vr kanojo
"VR Kanojo" has received generally positive reviews from critics and players alike. Reviewers have praised the game's immersive VR experience, interactive AI, and engaging gameplay. However, some critics have noted that the game's content may not be suitable for all audiences, particularly younger players. You're referring to "VR Kanojo"