I'm actually very new to castlevania and getting into it after Bloodstained (is this heresy? I apologise if it is.). I am a fair way into symphony of the night on Vita, and really enjoying it.
whichever level boss left the chat-up line on the game over screen, no, that's not how it works. I defeat you for the right to date you. if I date you on the game over screen, i could be just anyone. yes I know they're dark and have slow music and are romantic but, um, that one isn't actually a particularly good one. meet me on Ys' game over screen and we'll talk.
other than that I tried playing the first castlevania game on the collection on the switch and its fun but difficult and i can't finish it is so i can move on to the next on the collection :( and then there's all the ethical quandaries of freely available savestates and learning the game vs playing through it as the proper experience, and whether i'll be yelled at online.
I bought the two on the wii u as well, I dunno when to try playing them, maybe play through SoTN first?
(just fyi this is very strictly not a request for gameplay tips from any experienced castlevania players, I will play them strictly blind)