Do you know any anime (s) and manga (s) that are about teacher love?

So a student falls in love with her teacher and he falls in love with her and the two of them meet later, but have to keep their relationship a secret. Do you know any anime (s) and manga (s) that deal with this topic? The anime (s) can also be with German subtitles. You should be able to stream them (e.g. On Netflix, Prime Video / Animax, Crunchyroll, etc.).

»https://www.anisearch.de/anime/13909,why-the-hell-are-you-here-teacher« (students and teachers), legally available on Anime on Demand.

Hitorijime My Hero, but is Yaoi (Boy x Boy), I can't think of any other…

And btw Anime doesn't have a plural 🙃