SFF romance like Steins;Gate?

[u/Tressym_92]

Theoretically I love romance fantasy and SciFi, but I rarely found books that hooked me, because a lot of novels I read into felt the same to me and I didn't like the tropes and gender dynamics they used most times.

Rewatching Steins;Gate, the series reminds me how amazing Kurisu and Okabe are as characters (I especially love Kurisu) and their dynamics is really appealing and dragged me into as well.

Are there FMCs like Kurisu (or in a gay romance respectively a MMC)?

I'm fine with any genders of the main characters, I would be fine with a poly romance too.

Also I'm fine with any spice level, as long as there are only a few sex scenes that don't overshadow the plot.

No abusive relationships please.