Ep. 4: PHASE-0IV
Ipinalabas noong Disyembre 22, 1993
A Mishima Heavy Industries aircraft crashes near Ryunosuke and Nuku Nuku's house, and when they investigates, they finds a young girl inside! The girl, Eimi, begs them to protect her. But Eimi has a hidden objective. To fulfill it, she'll have to send Nuku Nuku to the scrap heap! (Source: Crunchyroll)