Interesting, use a completely different definition of rationalist to the one understood by... well... everyone

- but I still don't think that fully applies because yes, it's an emotional plot, but there is an extreme level of care put into making things realistic, and there's no "it works because it does" / "magic lol" - everything is either documented in background, or self-evident. Seems like a level of both to me - as I understand this romantic/rationalist definition, one that's purely romantic would be more sitcom than scifi.