Not everything in the wallpaper (such as Helmet Girl's room) is currently accessible in-game through any normal means. I'm also not finding any references to the wallpaper in the game's event data, but I might just be overlooking it.
Not everything in the wallpaper (such as Helmet Girl's room) is currently accessible in-game through any normal means. I'm also not finding any references to the wallpaper in the game's event data, but I might just be overlooking it.