A Man Is Among Them!
As Kodaka assumes the topic of the other day was just Pegasus' drunken ramble, the gang decide to go to a theme park together after Sena receives a group ticket. After starting off with a terrifying rollercoaster ride, Kodaka, Sena and Kobato go to watch a stage show of Kobato's favourite show, leaving Sena a little bashful when the staff imply she was Kodaka's husband. After Yozora and Sena end up throwing up after going on the rollercoaster several times in a row, the group go to the baths where it is discovered that Yukimura is, in fact, a girl, much to her disappointment.
Aired 01/02/2013EP 4 - A Man Is Among Them!

Haganai NEXT
The Neighbor's Club—a club founded for the purpose of making friends, where misfortunate boys and girls with few friends live out their regrettable lives.
Although Yozora Mikazuki faced a certain incident at the end of summer, the daily life of the Neighbor's Club goes on as usual. A strange nun, members of the student council and other new faces make an appearance, causing Kodaka Hasegawa's life to grow even busier.
While they all enjoy going to the amusement park, playing games, celebrating birthdays, and challenging the "school festival"—a symbol of the school life normal people live—the relations amongst the members slowly begins to change...
Let the next stage begin, on this unfortunate coming-of-age love comedy!!
(Source: Anime News Network)