Don’t know if I like gender benders with romance at all. I feel like it’s more important to allow the protagonist to have different perspective and appreciate the opposite gender.
And with the MC essentially being an old man, who died of old age, reborn as a girl, it would just feel weird if he had any romantic interests at all. I think it’s funny he takes pride in the beauty he’s going to become, but that should be the extent of that type of thing here.