Ep. 20: Lunar's Papa uses bishoujo game knowledge to cheer up his daughter, leading to chaotic school cross-dressing.
Aired on August 20, 2007

Lunar's Papa attempts to express his affection and lift his daughter's spirits after discovering a bishoujo game via a search engine. He utilizes this new insight to persuade Gouzaburou regarding the importance of understanding a daughter's emotions, treating the game as a helpful guide. Their efforts quickly spiral out of control as both men engage in cross-dressing activities. This misguided approach results in significant disruption and chaos throughout the school environment, turning their well-intentioned but flawed strategy into a source of widespread trouble for everyone involved.
Episodes
- Ep. 16 · Mermaid examiner Akeno Shiranui tests Sun's ability to handle non-humanoid mermaids.
- Ep. 17 · Mawari confronts Akeno after misinterpreting her influence over defeated delinquents.
- Ep. 18 · Class field trip to Kyoto leads to bathroom investigation after Maki attacks Akeno
- Ep. 19 · Akeno's Failed Plan to Separate Nagasumi and Sun with a Mermaid Beverage
- Ep. 20 · Lunar's Papa uses bishoujo game knowledge to cheer up his daughter, leading to chaotic school cross-dressing.
- Ep. 21 · Nagasumi receives a love letter and uses a potion that causes widespread romantic and jealous reactions.
- Ep. 22 · Lunar enlists Sun as a fake lover for a soap opera before practicing ventriloquism with Maki for a competition.
- Ep. 23 · Akeno questions Masa about her brother while Gouzaburou reveals Masa's true identity to Nagasumi.
- Ep. 24 · Chimp Misunderstands Mikawa's Condition and Friends Plan a Final Celebration