Ep. 19: Wataru seeks help for Saki's coming-of-age ceremony while others fight a cursed cockroach.
Aired on August 5, 2007Filler

Wataru notices Saki acting strangely and asks Hayate and Maria for assistance while retrieving a cursed video Nagi rented, which causes a giant cockroach attack. He had forgotten about Saki's coming-of-age ceremony and inquires with Nagi about buying a kimono. Meanwhile, Hayate and Maria battle the insect, with Maria screaming and hugging Hayate in fear. The narrator recounts the story of Saki's grandmother, Rei Kijima, a legendary housemaid. Nagi mistakenly believes Wataru's gift is for Isumi and sends her to his house. After Isumi leaves, Wataru presents the kimono to Saki, who appreciates the gesture. Later, Maria watches Hayate and Nagi enjoy fireworks until a small flying cockroach lands on her, causing her to freeze in terror.
Episodes
- Ep. 15 · Hayate and Nagi encounter Saeki and Taiga before Hayate challenges a Kendo club member.
- Ep. 16 · Hayate faces Kaede Azumamiya's butler and wins using a unique body-switching technique.
- Ep. 17 · Nagi seeks life experience and culinary skills to improve her manga submission after rejection.
- Ep. 18 · The students travel to a remote island for beach class while Hayate suffers from airsickness on the private jet.
- Ep. 19 · Wataru seeks help for Saki's coming-of-age ceremony while others fight a cursed cockroach.
- Ep. 20 · Hayate and Nagi compete in a singing duel at a karaoke box for Hayate's affection.
- Ep. 21 · Nagi's Backyard Amusement Park and Robot Eight's Revenge Attempt
- Ep. 22 · Nagi and Hayate's Fishing Trip Ends in Chaos and Fireworks
- Ep. 23 · Shiori Takes Over Yukiji's Class While Hayate Stops a Blackmail Attempt