I do actually like it when the genderbent protagonist is given a clear opportunity to change back and there isn't any kind of situational or social pressure to accept or refuse the opportunity. Normally they won't because then the TS fantasy is over. But if the writing is good, it can be really rewarding even if they do. (protip: the guy they turn back into shouldn't be the same person who got turned into a girl in the first place, character development-wise)
I mean all this is a moot point, Natsuki is all kinds of done for regardless. But I just like that the door was opened for her.