Hayate no Gotoku! Chapter 139:Nerima's and Suginami's Family Restaurant Is Full of Mangaka, Editors and Animators (練馬と杉並の喫茶店とファミレスはまんが家と編集とアニメーターだらけ,Nerima to Suginami no kissaten to famiresu wa manga-ka to henshū to animētā-darake?)
Gouji Ashibashi makes his first appearance in this chapter.
After having said that she'll make coffee, Nagi tells Ayumu that she would make coffee so good that it would make even Yūzan blush and say "It is not as if I came to drink the coffee you made!". This is a reference to the character Yūzan Kaibara from the series Oishinbo.
As Nagi explains Ashibashi's work to Ayumu, she brings up the title of a hit anime called "Already Somewhat Melancholic". This is a parody of the anime The Melancholy of Haruhi Suzumiya.