Finished watching Paradise Kiss. Same creator as Nana. Similar themes of naive young adults searching for their place in a professional world. It has less drama and no character as flawed/thorough as Osaki N. but is every bit as authentic in the way relationships are portrayed and how convincing the characters feel. If you liked one then you would probably like the other.
the very best romances have characters who commit to their emotions rather than dance around the issue for 100 episodes or worse have nothing happen at all. You also want characters who build each other up in some way as positive reinforcement (or tear each other down, toxicity can make for good drama). This show had all of that, and it happened quickly. It's not an ecchi and shows nothing explicit. But it does have a sex scene, and off the top it's probably the best handled one in the genre. White Album 2, Utena for raw shock value, Kare Kano are close.
it has a unique approach to directing dialogue scenes that I've only ever seen in NGE. Instead of focusing on the faces of speakers the camera would be fixed on their surroundings and inanimate objects that separate them. Like a teapot in the center of a shared table that they'll pick up to pour a drink. You obviously know what the characters look like, and you can sense their emotion through the tones of their voices, so you're able to visualize their mannerisms during a conversation in a way that's more lively than what is usually shown in anime (mouths opening and shutting on repeat, very few frames and generally low effort animation).
It also chooses to not play OST's for the majority of the scenes. And when there is music the sound mixing makes the voices take clear priority. So low that it sounds like a dim radio in the background. Probably intended to convey the realism of environment since people obviously don't have on the go orchestras with them during moments of distress.
Maybe prisoner of the moment, but I think its a 10/10. Doesn't have the ridiculous lows of Nana, but for damn sure has the highs and actually concludes itself unlike the Nana anime.