I'm pretty sure they're in college! But this scene took place after they were in a double date and the lesbian couple wanted to go in old school uniforms, but they're all adults :)
they're already in college
they're already in college, did u forget they're just using their highschool uniform for the double date?
Damn, I got confused because the last time was the scene where they were in high school
Seeing sex scene where their still in highschool(?) in manhwa. Not that I complain, but back then I thought they're not allow it to show it (penetration) until they go to college, idk why but is it okay rn?