Ep. 4: Haruko's baseball prowess and a satellite threat endanger Naota in Mabase.
Haruko dominates the Mabase Martians with exceptional pitching and hitting, coached by Shigekuni. Naota refuses to bat to avoid comparison with his professional brother and gets hit by Haruko. Jealousy grows as Kamon and Haruko act strangely. Naota meets Commander Amarao of Interstellar Immigration and Lieutenant Kitsurubami, who warns him about Haruko. Amarao notes a satellite damaged by Haruko’s hit is falling toward Earth. It targets a light burst from Naota’s N.O. channel, triggered by anger toward his father. Naota attacks a robot impersonating his father with a bat, then revives the real Kamon with hot water. Haruko takes Naota to the Medical Mechanica plant, extracting a Gibson Flying V guitar from his head as his bat. The satellite transforms into a baseball glove launching a bomb. Naota halts the detonating bomb, but Haruko returns to swing her guitar, knocking the threat back into space.
Episodes
- Ep. 1 · Naota encounters Haruko after a neck kiss incident in ordinary Mabase
- Ep. 2 · Naota discovers his empty head while Mamimi worships a flying robot as a god
- Ep. 3 · Naota and Ninamori face personal scandals and supernatural cat ears during a school play rehearsal.
- Ep. 4 · Haruko's baseball prowess and a satellite threat endanger Naota in Mabase.
- Ep. 5 · Naota and Kanti duel for Haruko while a giant robot attacks the Medical Mechanica plant.
- Ep. 6 · Haruko seeks Atomsk while Naota kisses her and escapes to space in Mabase's aftermath.