Superdimensional Kaguya: Everlasting Huiye

[Fanfiction + two female leads + everyday life + happy ending]

“If I could do it all over again, could I create an even happier ending?”

Years later, during a bionic experiment, Caiye's consciousness accidentally returns to the moment she first met Kaguya. Facing once again the figure who has been waiting for her for eight thousand years, what choice will she make? (Happy ending; there may be a small twist along the way.)