This was during their last Give Me Five handshake event.

A witness writes;

~

AKB48、ゆきりん&まゆゆがファン嫉妬の“お熱い”パフォーマンス
AKB48, Yukirin and Mayuyu “hot” performance that made fans jealous

AKB48の熱烈なファンならば、“ゆきりん”こと柏木由紀（20、チームB）と、“まゆゆ”こと渡辺麻友（17、チームB）の仲の良さは、先刻承知だと思うが、ついにここまで！という“お熱い関係”を1万3000人のファンの前で、堂々と披露した。
As an AKB fan, you would probably know how close both Kashiwagi Yuki, nickname, Yukirin(20, Team B) and Watanabe Mayu, nickname Mayuyu(17, Team B) are. Right now, both of them actually displayed their “hot relationship” publicly in front of an audience of 13000 fans.

それは、18日の埼玉県・西武ドームで行われた「KING RECRDS presents 10月26日発売23rdマキシシングル『風は吹いている【通常版】』全国握手会イベントAKB48祭りpowerded by ネ申テレビ』での出来事。
That is, during the handshake event on the 18th, for Kaze wa Fuiteiru at Saitama, Tokyo Dome. [skipping portions that are irrelevant to mayuki]

先の2本の記事で述べたように、東日本大震災復興を目的とした「誰かのために」プロジェクトで、義援金が2011年3月末 から12億5417万5973円集まったという報告が行われ、その後のミニライブ2曲が終了し、「ネ申（ネもうす）」恒例の“ムチャ振り企画”として、 「○○に告白」が行われている時だった。
As said in the previous 2 reports, to support Tokyo’s Earthquake disaster the other time, there was the production of 「dare ga no tame ni」, since March 2011, they have received 12billion and 5475,973yen. After which they had a mini live of 2 songs, and then went into the Nemousu TV usual “muchaburi/prank” event, with the theme being, 「confession to ○○」

司会進行を務める“ゆうこ”こと大島優子（23、チームK）の横にいたゆきりんと、その隣にいたまゆゆが、じゃれ合い始めた。
The one standing next to the moderator, Oshima Yuko, nickname Yuko(23, Team K), is Yukirin, and next to Yukirin, is Mayuyu. And so both of them started to flirt.

これだけならば、毎度おなじみの光景であるが、今日は、ちょっといたずら心が大きかったようで、まゆゆが、左半身になり、ファンに向かって、左足を挙げて、スカートのすそを手前に引くようなセクシーポーズ。
Of course, if it’s only flirting, you can see this at almost every event. However, for some reason today, their actions became bigger. Mayuyu turned to the left even though the fans were in front, raised her left leg, and used her hands to pull her skirt towards her and did a sexy pose.

そう、40代後半の方ならわかると思うが、ピンクレディーの『渚のシンドバッド』の「♪セクシ～、あなたはセクシ～」という歌詞の時の振りで、ミニスカートのすそを太股から手前に引くような悩殺ポーズがあったが、まさにそれ。
That’s right, those in the fourties should already know, this is pink lady’s song, 『渚 のシンドバッド』when they sing the part「♪sexy～、you aer sexy～」the dance for this portion. to pull the hem of the miniskirt with your hands towards you, to just do that, is a pose to enchant others.

ゆきりんも、まゆゆの肩を組みながら、顎を上に向け、さらに、体をややのけぞらせる。チームBのツートップが見せた“挑発”ポーズ。気が付いたファンは卒倒寸前だったことだろう。
Yukirin too, while holding onto Mayuyu’s shoulders, turned her chin up, and bent backwards. This is Team B two top, “suggestive” pose. Fans who noticed this scene would probably be on the verge of collapsing.

さらに、2人の“劇場”はこれでは終わらない。今度はまゆゆがゆきりんをギューッと抱きしめる。But, this “skit” by the 2 of them has not ended. This time, Mayuyu Gyu~tsu and hugged Yukirin.

きつく…きつく…抱きしめる…。
tighter…tighter…and hugged tighter…。

ゆきりんは、ファンのリアクションの声を拾うように、会場に向けて、マイクを突き出す。そして、今度は、お互いに向か会いながら、ギュ～ッと抱きしめ、見つめ合い…顔が近づいていく…。
Yukirin seemed to have noticed the fans reactions and so turned to face the front and reached out for the mike. But then, this time, when both of them met again, they Gyu~tsu and hugged again, looking at each other…and their face got closer and closer…。

もちろん、その先はなく、パッと会場のほうを振り返り、反応を見て楽しむ2人。この後も、2人は肩を抱き合ったまま、なにやら会話を交わしては、笑いあうなど、完全に2人の世界。
Of course, they looked at the reaction of the crowd, the both of them looked very happy. And then, the both of them just hugged each other by the shoulders, and although we don’t know what they were chatting about, they laughed once in a while, it’s entirely a world consisting of both of them only.

AKB48の「全国握手会」イベントに行くことがあったら、「ムチャ振り企画」や「トークコーナー」の間など、ゆきりんとまゆゆに限らず、メンバー同士が、ちょいちょい小芝居しているので、そのあたりもお見逃しなく。
Actually, for all the Zengoku Handshake events, during the muchaburi sessions or the talk corners, Yukirin and Mayuyu are always like that. It’s just that the surrounding members are all busy participating in the activity, and so they went unnoticed.

しかし、この日は、ファンを挑発し過ぎでっせ、お2人さん！
But this day, they have arroused the fans too much, oi, the both of you!

Ctrl+C, (V)  – And people say Windows sucks! Bull

Any way, for the old fans of Mayuki, this should be no surprise at all. The witness was probably turned into one of us from this event hence le shock!

Mayuki neglecting the rest of the world for their own happens a lot it’s almost a crime for it to miss in an event now!