This review may contain spoilers. I can handle the truth.
I was like: "C'mon Sora, why you don't move your ass and help your friends?" and then it hits me at the end... When she was alone in her bedroom and heard Taichi's whistle, she already had her digivice turned into stone, that means: Piyomon wasn't with her anymore already, she was the first one to outgrew her "digimon era" 😭