Angels and Spaceships Episode 5

The Bilkis has been boarded by a Ring that can copy human form. When it copies an individual, it drains them of blood and leaves them in a comatose state. Once this Ring is discovered, a shipwide search begins. Mika encounters Hiroto and believes that he's the Ring. To prove his identity, he relays details of the incident in which Ryoko died and he survived.