Ep. 5: Nanaka struggles with jealousy as Nenji cares for Kuriko during a stalled date.
Aired on February 6, 2003

5
Nenji rescues kindergartener Kuriko Aratama from a bully, causing her to develop strong feelings for him. This incident interrupts Nanaka's planned movie date with Nenji after Kuriko loses her wallet. Feeling jealous of the attention Nenji gives Kuriko, Nanaka takes his advice to mature seriously and attempts to study. Following a conversation with Amemiya about her emotions, Nanaka decides to take Nenji to an amusement park. However, the outing transforms into a three-person date involving Nenji and Kuriko, altering Nanaka's original plans and forcing her to navigate her complex feelings in a shared experience.
Episodes
- Ep. 1 · Nanaka Kirisato, 6 Years Old
- Ep. 2 · Nanaka volunteers to play piano for the choir competition despite lacking skills.
- Ep. 3 · Nanaka the Big Sister
- Ep. 4 · Amemiya learns Nanaka's secret and resolves a conflict over Nenji's attention
- Ep. 5 · Nanaka struggles with jealousy as Nenji cares for Kuriko during a stalled date.
- Ep. 6 · Nanaka becomes a teenager after separating from Nenji during a Kyoto school trip
- Ep. 7 · Nanaka reverts to age six after fainting during a Kyoto trip with Kenji and Nenji.
- Ep. 8 · Nanaka plays nurse for sick Nenji, causing chaos until Magical Domiko fan Yoshida arrives to help.
- Ep. 9 · Nanaka volunteers as Magical Domiko for the school play and struggles with age regression during rehearsals.