Ep. 4: Momoka retrieves Miyu's stolen necklace after chasing away a crow
Aired on April 18, 2000

4
Kanata and Miyu go out with friends, but Miyu discovers her necklace is missing before leaving. A crow has taken the item, yet three-year-old Momoka chases the bird away and recovers the jewelry. Meanwhile, Wanya loses track of Ruu while shopping for dinner. Ruu encounters Momoka, who is holding the retrieved necklace. The two children stay together until Kanata and Miyu eventually locate them. Upon being found, Momoka begins referring to Ruu as her boyfriend.
Episodes
- Ep. 1 · Miyu moves to a temple with Kanata, alien baby Ruu, and pet Wanya after parents leave for NASA.
- Ep. 2 · Miyu’s First Day at School and the Chimney Chase with Ruu
- Ep. 3 · Chris visits Kanata for Miyu's welcome party, leading to chaos and misunderstandings.
- Ep. 4 · Momoka retrieves Miyu's stolen necklace after chasing away a crow
- Ep. 5 · Miyu attempts to cook pumpkin dinner for Kanata while her mother arrives unexpectedly.
- Ep. 6 · Miyu's mother visits for Mother's Day with a NASA alien detector
- Ep. 7 · Ruu-kun becomes popular at school during cooking class
- Ep. 8 · Ruu-kun's Acting Debut