>>110589411main character gets his mind swapped into some rando teen girl, preferably ultra girly
frame the episode like he has to 'keep up appearances' until he gets the macguffin or scientist to swap back, all without contact with the original body.
he's eased into her life for a week or so, gradually getting better at dressing up for school, starting to enjoy talking with her friends, maybe even doki-ing a bit when some jock talks to him
gets the artifact or to the scientist or whatever and his body in the right position
it doesn't do anything, all it did was imprint his mind onto some teen girls and he's eventually subsumed into the pink, bubbly personality and mannerisms of the swapee
or maybe it 'swaps him back' but does so by putting a copy of the already-copied mind back in the 'original' body.
there needs to be a bad end otherwise my dick doesn't get hard. 
