Boku to Misaki-sensei, called Me and Professor Misaki, is a one episode OVA released in 2017. This single episode is 21 minutes long. It is an original.
I hadn’t heard of this one before so I had to do a bit of research. The original synopsis is this: A student confesses his love to his teacher. Boku to Misaki Sensei follows a young student who musters enough courage to profess his love for the teacher. The teacher in question is a big-breasted blonde with a perfect body.
Here’s what they don’t list: said student is barely in middle school. Which makes this hanime disgusting. And the fact that Boku to Misaki-sensei has nearly 7k in searches a month is disturbing. Move on you fucks, this one is a no.