does anyone know this yaoi?

//sort of super long description btw//

it goes something along the lines of a scientist/researcher is looking for a place to conduct his research and finds an abandoned building. he's inside and looking around the place when a kid asks what he's doing there or something. it turns out the kid's rich and either he or his parents own the place. the kid falls in love with the scientist though so he allows him to use the building and funds his research.
some time later after the research project's well underway the kid hides in one of the machines (he was either playing hide and seek or sulking because the scientist wasn't paying attention to him) and the machine gets turned on. right after the machine's turned on the scientist realises the kid's inside. after it's been shut off and the kid comes out, he's grown up and ~18 years old. the kid uses the machine to become an "adult" every day because he wants to have the scientist fall in love with him. and he does, but he doesn't want him to continue using the machine just in case it harms him (and because the kid's still a kid and not actually an adult) so they stop using the machine.
i don't know if they ever had sex then but they do at the end i think (when the kid's actually an adult). i'm pretty sure they did kinky stuff when he was a kid though.

ah right, and the scientist's a bottom and the kid's a top.