Help me find a Drama I think I just imagined?

My Friends and I were talking about different CDramas that take place in ancient Times and I mentioned one where a future emperor fell in love with either his wet nurse or nanny or something similar and I think she was reborn and did it on purpose? Anyway, apparently I'm the only person between us all that has seen it and now I have tried everything to find it and just can't?

Might have been a Vertical Drama? I just remembered I saw it on YouTube?

Please help me out so I know I didn't just imagine it 😅