It's actually not him, the gist of the doujin is that since Hayate's so busy banging Hinagiku, the three stooges, especially Risa, are getting mad. So they hatch a wacky plot (with the help of Isumi) to dress up Miki (closest in appearance unfortunately) as Hayate and have her molest Maria then catch "Hayate" in the act. And it just gets sillier from there.
......Let us all now take this time to grieve for our fallen brother. Though he may still take in the breath of life, in our hearts as fellow men he is without a doubt dead both inside and out.
Amen.
You're so intense today Hayate-kun...It came off...!Whoops,
...Oh.Oh*roll**roll*Please give me a moment to rest... okay