Im going to quickly screw the idea of a "Random Generateing Dungeon every level", cause I know we can be more creative than that. Draw random squares in MS Paint or something and we can come up with the dungeon layout.
Since I remember that somebody said LV1 was an Anime/Manga based level, I suggest that the world before you enter the dungeon zone is an Anime Convention with plenty of booths and cosplayers. Upon entering town the group meets Kero~, a User at KYM but after agreeing to come along runs off to a "Thread" that just threw a party Insert Embarased Teardrops and Aura here (Get Kero~ over here to decide on the Diologe). The entrance to the Dungeon section becomes apparent and you can enter. There is also a Wepon Shop in this part of town.
The Dungeon it'self is a multifloored dungeon that parody's the various anime common locations. (One room may be a school for instance, while the next room wouled be onboard an Airship.) Enemy's you fight relate to Pokemon, Dragon Ball Z, Melencholy of Haruhi, Etc, and the boss is Kotana from Lucky Star. (We will fight Kawaii, Vegeta, Seto Kaiba, and Emiya Shiro "Archer" later.)
Natsuru will explain the layout as "A mishmash of various things that only a site like 4-Chan couled look like" he will go on to explain that most normall sites look extreamly orginized. "Wikipedia for instance, it looks like a massive library of all knowlege that extends forever. It's just a bunch of bookcases, while a site like Youtube is a giant movie theater with hundreds of theaters. Each website has their own theme. 4-chan however, is unable to present a common theme, thus it can never maintain it's shape and can never blend."