Tetsuya Chiba (Ashita no Joe) and Machiko Satonaka (Lady Ann) were among the manga creators who held a press conference on Monday to voice their opposition against proposed legislation in Metropolitan Tokyo to restrict sexually provocative, "visual depictions" of characters who sound or appear to be younger than 18 years old. The group presented the Tokyo Metropolitan Assembly with a written statement in opposition to the measure. Among the creators who listed their names in the statement were Fujiko Fujio A, Takao Saito, Moto Hagio, and Ryohei Saigan.

Nico Nico Douga presented a live video feed of the press conference, and the TBS television network posted a video excerpt from the press conference.

Source: 47 News, Sankei Shimbun

Update: The freelance writer Tetsuya Shibui posted photographs from the press conference, including two photographs of the list of names attached to the statement opposing the proposed legislation:

Fujiko Fujio A

Takao Saito

Juzo Yamasaki

Kenichi Kitami

Mitsuru Adachi

Rumiko Takahashi

Gosho Aoyama

Moto Hagio

Michiyo Akaishi

Wakuni Akisato

Hiroshi Motomiya

Makoto Ogino

Big Joe

Takeshi Ōmi

Uzuki Nakamura

Yudetamago

Takashi Sano

Tetsuya Chiba

Kenshi Hirokane

Kaiji Kawaguchi

Makoto Kobayashi

Takeshi Maekawa

Hiroki Yagami

Ken Akamatsu

Tohru Fujisawa

Kazuki Yamamoto

Kanji Sorasaki

Naoki Serizawa

Tetsuya Koshiba

Uchū Nishikawa

Waki Yamato

Jun Fukami

Mariko Nakamura

Nami Akimoto

Yasuyuki Kunitomo

Ryohei Saigan

Jun Hayase

Satosumi Takaguchi

Kaworu Watashiya

Masako Watanabe

Keisuke Itagaki

Kenji Hamaoka

Yoshikazu Yasuhiko

Takayuki Yamaguchi

Yoshiaki Tabata

Yousuke Takahashi

Akihito Yoshitomi

Yūki Yogo

Yasuhiro Imagawa

Yasunari Toda

Kenetsu Satou

Hiroyuki Yoshino

Masahiro Itosugi

Kenji Yamamoto

Koban Sameda

Makoto Uezu

Shigeru Morita

Hiraku Kaneko

Munenori Nawa

Akita Shoten

Shonen Gahosha

Kadokawa Shoten

Shinchosha

Kodansha

Hakusensha

Shueisha

Futabasha

Shogakukan

Leed

Update 2: Other people who have voiced their opposition to the proposed legislation include voice actress Haruna Ikezawa, lawyer Takashi Yamaguchi, manga/anime creator Yoshitoshi ABe, manga/anime creator Yun Kouga, manga creator Yasuhiro Nightow, manga/anime creator Go Nagai, manga creator Nanae Sasaya, manga creator Keiko Takemiya, and manga creator Kohei Nishino as well as the other Manga Department professors at Kyoto Seika University.

Update 3: The Ustream website is streaming the press conference, and The Journal website posted the list of creators opposed to the proposed legislation. Thanks, Yasuhiro Nightow.

Update 4: Hideki Egami, the editor-in-chief of Shogakukan's Monthly Ikki manga magazine, asked manga creators to respond on Twitter at about 4:00 a.m. EDT if they oppose the proposed legislation. The responses, have been arriving at a rate of about one per minute since then.

Update 5: As of 6:00 a.m. EDT, Egami's compiled list includes:

Makoto Sato ( Todoroke! Tekkotsu-kun , Twitter)

, Twitter) Syuji Takeya (Astral Project - Tsuki no Hikari, Twitter)

Shinji Inamitsu (Deru Toko Demasho!, Twitter)

Miki Tori (Anywhere But Here, Twitter)

est em (Seduce Me After the Show, Twitter)

Hiroko Matsuda (Twitter)

Hideo Shinangawa ( Monthly Spirits magazine, Twitter)

magazine, Twitter) Hisashi Eguchi (Stop! Hibari-kun, Twitter)

Banana Nangoku (Twitter)

Masaharu Inoue (Twitter)

Natsuki Sugihara/Kirico Higashizato (Love Recipe, Twitter)

Tōru Sugita (Twitter)

Yūko Umino (Twitter)

Maico Shioya (Twitter)

Hozumi (Twitter)

Yukio Tamai (Twitter)

Ryoji Hido (Heroes Are Extinct!, Twitter)

COSiNE (Twitter)

Juichi Iogi (Twitter)

Miyuki Noma (Twitter)

Hidefumi Akino (Twitter)

Ume (Takahiro Ozawa/Asako Seo, Twitter)

Kagekusa Kimi (Twitter)

Takashi Kisaki (Twitter)

Miou Takaya (Twitter)

[To be continued]

Update 6: The Net Business Innovation Research Consortium (NBI) industry group issued a statement in opposition to the proposed legislature. The online companies Google, Microsoft, Yahoo, Rakuten, and DeNA are on the consortium's governing board. Thanks, dormcat. Source: RBB Today

Update 7: Translator and production coordinator Dan Kanemitsu (Twitter) led about 30 comic book authors, editors, and translators to the Tokyo Metropolitan Assembly on Monday to speak with four legislators directly. (Kanemitsu is a voting citizen of Tokyo.) Kanemitsu brought the following (provisional) list of industry professionals to the meeting:

Yoshitoh Asari

Keitaro Arima

Yuji Kaida

Aya Kaida

Hotaru Umino

Benkyo Tamaoki

Junichi Inoue

Hisao Tamaki

Natsuko Mori

Rasenjin Hayami

Tsubura Hase

Takeshi Nogami

Yohane Yamamoto

Kozo Shimokata

Ezuroku

Hironori Hazuki

Tsutomu Shindo

Hiroyuki Sanazura

Kiyoshi Shimizu

Kaoru Nagayama

Taku Koide

Cosine

Kosetsu Tateno

Nagito Mikoshiro

Thanks to dormcat for help on name transcriptions.