We kissed to swap bodies for 10+ years, went on dates and now live together, but it's all NO HOMO.
Why would you say that? It's established they are a couple.
In a previous scene (chapter 40, page 4) Chinatsu specifies that she and Miharu are not "roommates" but a couple of lovers living together.
And, in this chapter, where we find out how they relationship started, we see Chinatsu explain to Miharu (after the two spend their first day swapped) that "for now" they're more than friends but not yet lovers... and she then tells Miharu to "do her best" at quickly seducing her into becoming Miharu's lover. (Seeing them ten years later, it's clear Miharu did a good job.)
Looking at them, we can see the future of Akiho/Fuyumi and Haruko/Natsuko. Yup. <3