Hayate no Gotoku! CAN'T TAKE MY EYES OFF YOU Episode 4 - The Fourth Night aired on October 24th 2012.
Ruri is looking for a way to get closer to Nagi in her search for the mysterious item known as the Kurotsubaki which is believed to be located at her mansion. Later after taking Chiharu and Kayura advice for her to buy some games for her to play with Nagi only just to find later that she had already bought and played them earlier. After Nagi, Chiharu and Kayura have a heated discussions about their preferences related to manga, anime and games, Ruri asks them for some recommendations and they set for Tachibana's shop. While the trio argue about which manga she should start reading first, she ends up wandering into the R-18 dōjinshi section just to flee in horror soon after. In the end, she ends up purchasing just a dōjinshi from an unknown author which Hayate recognizes as one of Nagi's original creations.
While in Akihabara, the store Ruri visits to ask for Chiharu's advice is Animate.
While in Animate, Chiharu sells Ruri a video game called Dondoko Quest VII. This is a parody of Dragon's Quest VII
After having learned from Kayura that she needed a game console to play her recently purchased game, Ruri buys a gaming system called Dreamnyast. This is a parody of the Sega Dreamcast.