Lantis' official YouTube channel has posted a 80-second music video for anison unit JAM Project's 70th single song "Seijaku no Apostle" (English title: Uncrowned Greatest Hero) to be released on April 24, 2019. It is used as the OP theme for the highly anticipated second season of the TV anime One-Punch Man. 

The song is written by veteran lyricist Yukonojyou Mori, and co-composed by the group's leader Hironobu Kageyama and semi-regular member Ricardo Cruz, who also appears in the CD jacket photo and MV. In addition, French rapper OrelSan, who voices the protagonist Saitama in the anime's French dub, joined the song's collaboration edition, which will be used in France and French-speaking territories.

"Seijaku no Apostle" short MV

フランス語吹替版でサイタマ役を務めたOrelSanが「ワンパンマン」第2期オープニング主題歌「静寂のアポストル」でJAM Projectとコラボ！JAMの楽曲にOrelSanがラップで参加！フランス及びフランス語圏ではコラボレーション楽曲が配信放送されます。詳しくは→ https://t.co/114XtYeNGI #onepunchman pic.twitter.com/KE64hbnUus

— TVアニメ「ワンパンマン」公式 (@opm_anime) 2019年4月8日

JAM Project and OrelSan made collaboration for TV Anime “One-Punch Man” 2nd season opening theme song “静寂のアポストル (English Title: Uncrowned Greatest Hero)”!... https://t.co/3qZCC9jcvu

— Lantis Global News (@lantis15th) 2019年4月8日

30-second CM feauring the OP song

4/24（水）発売TVアニメ『ワンパンマン』第2期オープニング主題歌JAM Project「静寂のアポストル」のCMとアーティスト盤ジャケットが解禁！かっこいいです！ #onepunchman
CM 30秒→ https://t.co/IPuYoEs6JM pic.twitter.com/ZXuliPwWct

— TVアニメ「ワンパンマン」公式 (@opm_anime) 2019年3月26日

Following the 30-minute digest of the TV anime first season aired in Japan on April 2, the second

season's first episode (13th in total) "Hero no Kikan" (The Return of The Hero) will be aired on TV

Tokyo, TV Osaka, and TV Aichi at 25:35 on April 9 (JST).

Trailer

English-subtitled version PV

Second season main staff:

• Based on Original Work by: ONE, Yusuke Murata 
• Director: Chikara Sakurai 
• Script: Tomohiro Suzuki 
• Character Design: Chikashi Kubota 
• Sound Director: Yoshikazu Iwanami 
• Music: Makoto Miyazaki 
• Opening Theme: JAM Project 
• Ending Theme: Makoto Furukawa
• Animation Production: J.C.STAFF

Main voice cast:

• Saitama: Makoto Furukawa 
• Genos: Kaito Ishikawa 
• Speed-o'-Sound Sonic: Yuki Kaji 
• Terrible Tornado: Aoi Yuki
• Silverfang: Kazuhiro Yamaji 
• Atomic Samurai: Kenjiro Tsuda 
• Child Emperor: Minami Takayama 
• Metal Knight: Tessyo Genda 
• King: Hiroki Yasumoto 
• Zombieman: Takahiro Sakurai 
• Drive Knight: Yoji Ueda 
• Pig God: Daisuke Namikawa 
• Superalloy Blackluster: Satoshi Hino 
• Watchdog Man: Yuji Ueda 
• Flashy Flash: Kohsuke Toriumi 
• Tank-top Master: Katsuyuki Konishi 
• Metal Bat: Wataru Hatano
• Puri-puri Prisoner: Masaya Onosaka 
• Handsome Kamen Amai Mask: Mamoru Miyano 
• Hellish Blizzard: Saori Hayami 
• Mumen Rider: Yuichi Nakamura 
• Garou: Hikaru Midorikawa

Source: TV anime "One-Punch Man" official website / Twitter, Lantis official YouTube channel

(C) ONE, Yusuke Murata/Shueisha, Hero Association Headquarters