Romantic Christmas Eve! What Does the First Kiss Taste Like? - I Can't Go Back Empty-Handed! Let's Go to the Make-Out Park!
Jealous of her sister Chika bringing home lots of cute guys as boyfriends almost every day, Yamada steps up again to seduce Kosuda, just in time for Christmas Eve. Kosuda, on the other hand, gathered his guts again and asked Yamada out on a date on Christmas Eve, despite Yamada just waiting for him to ask her out. With Kosuda's gift of ear piercings, Yamada decoded this as a signal that they should look for a love hotel. Unable to find a cheap one, Yamada decides to go back down Love Hotel Lane to keep looking, until a nervous Kosuda attempts to kiss her, but his delays pissed a happy yet equally nervous Yamada off that she did the kissing herself, causing a massive headbutt. One way or another, Yamada's first kiss happened. Then her nervousness got the better of her that she ran away from Kosuda to hide somewhere.
Aired 23/04/2010EP 4 - Romantic Christmas Eve! What Does the First Kiss Taste Like? - I Can't Go Back Empty-Handed! Let's Go to the Make-Out Park!

Yamada's First Time: B Gata H Kei
Yamada, first name withheld, is a 15-year-old girl who has just entered Takizawa High School. Easily considered exceptionally beautiful, she has only one problem with her own body, she thinks her vagina looks weird and is very self-conscious about it.
Upon entering high school, her dream was to have casual sex with 100 men but therein lies the problem, she believes an experienced partner will tease her about the way her vagina looks or simply the fact that she's a virgin. She stumbles upon the solution in the form of Kosuda Takashi, a fellow virgin, whom she believes will help ease the transition to more experienced partners.
There's only one small problem, Yamada doesn't know anything about sex or the ancient art of seduction, meaning her quest to conquer Kosuda will be a difficult one.