Vivy: Fluorite Eye's Song Episode 4 English Subbed Episode Title:Ensemble for Polaris - Our Promise.Episode Description:As Vivy denies being Diva to Yuzuka, they run into Estella. However, Vivy realizes she is an imposter and she attacks them, but they manage to escape. Matsumoto then reveals that Toak has infiltrated Sunrise and concludes they are behind the crash whilst framing Estella. To fight them off, Vivy has Matsumoto install a combat program into her. She then finds and rescues the real Estella, who deduces the imposter's identity: her sister unit Elizabeth, who was scrapped. Meanwhile, it is revealed that Elizabeth was repaired by Yugo as she uses Estella's ID to gain system access and push Sunrise out of orbit...