This is Chapter 15 of the Ouran High School Host Club manga series.
The episode is a parody of the classic novel, "Alice's Adventures in Wonderland", featuring Haruhi as "Alice" as she journeys through Ouran-cum-Wonderland meeting the Hosts who play various Lewis Carroll characters.
Guest Fax Space
There is a spare space/page in the manga, where a guest draws a comic of the series. Nara Kusakawa appears as the featured artist in this chapter's "Guest Fax Space."
Characters in Order of Appearance