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"Junjō U-19" (純情U-19, "Innocence Under 19") is Japanese idol group NMB48's third single. It was released on January 25, 2012. This is the first single to feature members from Team M which was formed on January 26, 2012. The single was released in four editions: Type-A, Type B, Type-C and a Theater edition, all of which contains different B-sides. Upon its release "Junjō U-19" topped the Oricon weekly chart and Billboard Japan Hot 100.

"Junjō U-19"
Single by NMB48
from the album Teppen Tottande!
B-side	"Baatari Go!" "Doryoku no Shizuku" (Type-A) "Migi e Magare!" (Type-B) "Ren'ai no Speed" (Type-C) "Jungle Gym" (Theater Edition)
Released	January 25, 2012 (2012-01-25)
Label	laugh out loud! records
Songwriter(s)	Yasushi Akimoto
Producer(s)	Yasushi Akimoto
NMB48 singles chronology
"Oh My God!" (2011) "Junjō U-19" (2012) "Nagiichi" (2012)

Live performances

The group first performed the song during the Hey! Hey! Hey! 2011 Christmas special which aired on December 19.[1]

Members

On December 18, 2011, the senbatsu (選抜, "selection") members were revealed.[2]

"Junjou U-19"

• Team N: Mayu Ogasawara, Kanako Kadowaki, Rika Kishino, Haruna Kinoshita, Riho Kotani, Rina Kondo, Kei Jonishi, Miru Shiroma, Aina Fukumoto, Nana Yamada, Sayaka Yamamoto, Miyuki Watanabe
• Team M: Momoka Kinoshita, Eriko Jo, Fuuko Yagura, Keira Yogi

"Baatari Go!"

Performed by Undergirls

• Team N: Kanna Shinohara, Yuuki Yamaguchi
• Team M: Riona Ota, Rena Kawakami, Yuuka Kodokari, Yui Takano, Airi Tanigawa, Ayame Hikawa, Runa Fujita, Mao Mita, Ayaka Kurakami, Sae Murase, Natsumi Yamagishi
• Kenkyuusei: Yuki Azuma, Yuumi Ishida, Mizuki Uno, Risako Okada, Ayaka Okita, Narumi Koga, Arisa Koyanagi, Sorai Sato, Hiromi Nakagawa, Rurina Nishizawa, Momoka Hayashi, Mizuki Hara, Hitomi Yamamoto

"Doryoku no Shizuku"

Performed by Shirogumi

• Team N: Mayu Ogasawara, Kanako Kadowaki, Rika Kishino, Haruna Kinoshita, Kanna Shinohara, Nana Yamada, Sayaka Yamamoto
• Team M: Yuuka Kodakari, Eriko Jo, Natsumi Yamagishi, Keira Yogi
• Kenkyuusei: Ayaka Okita

"Migi e Magare!"

Akagumi

• Team N: Riho Kotani, Rina Kondo, Kei Jonishi, Miru Shiroma, Aina Fukumoto, Yuuki Yamaguchi, Miyuki Watanabe
• Team M: Momoka Kinoshita, Airi Tanigawa, Ayame Hikawa, Ayaka Murakami, Fuuko Yagura

"Renai no Speed"

NMB Seven

• Team N: Mayu Ogasawara, Kei Jonishi, Aina Fukumoto, Nana Yamada, Sayaka Yamamoto, Miyuki Watanabe
• Kenkyuusei: Eriko Jo

"Jungle Gym"

• Team N: Sayaka Yamamoto

Charts and certifications

Weekly charts

Chart (2012)	Peak position
Japan (Billboard Japan Hot 100)[3]	1
Japan (Oricon)[4]	1
Japan (RIAJ Digital Track Chart)[5]	32

References

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