Ep. 17: Nagisa loses celebration tickets and takes Hanon by boat to the event
Aired on July 24, 2004

17
Nagisa receives celebration tickets from Masahiro and intends to invite Hanon. His attempt to secure her agreement is interrupted when Coco, Noel, and Caren manipulate the situation to help Hanon recognize her genuine affection for him. The situation deteriorates further as Hanon becomes jealous. Just before Nagisa is scheduled to take Hanon to the celebration, he discovers that he has lost the tickets, which causes Hanon significant distress. In response to this setback, Nagisa chooses to transport Hanon by boat to a location offering a view of the celebration venue instead.
Episodes
- Ep. 13 · Hanon and Rina encounter Masahiro at an ice cream parlor, leading to curiosity about his background.
- Ep. 14 · Kaito Remembers His Past While Gaito's Spirit Appears and Lanhua Is Introduced
- Ep. 15 · Lucia, Hanon, and Rina travel to Antarctica to stop a melting iceberg and tsunami threat.
- Ep. 16 · Mermaid Princesses Team Up for Beach House Competition and Volleyball Match
- Ep. 17 · Nagisa loses celebration tickets and takes Hanon by boat to the event
- Ep. 18 · Mermaid Princesses encounter a magical world granting simultaneous wishes
- Ep. 19 · King Somegorō Seeks Mermaid Princesses Aid Against Black Beauty Sisters
- Ep. 20 · Caren Dates Masahiro to Investigate His Affection for Rina
- Ep. 21 · Lucia discovers Kaito's house key and recalls her promise to clean while he is away.