SI-VIS: The Sound of Heroes Confirms Four New Voice Actors and Theme Song Artists for Second Cour Kickoff

The official website for SI-VIS: The Sound of Heroes confirmed major updates for its second cour, which launched today with Episode 13. The series revealed four new supporting voice actors and detailed the new opening and ending themes as the back half of the two-cour run kicks off.

The musical group SI-VIS, who are central to the anime's plot, is performing both new themes. They are handling the OP "Supernova" and the ED "Singing Over." This choice aligns with the series’ core concept, which centers on the global co-ed group secretly fighting the world-ending Mirage calamity by channeling energy harvested from their live concert crowds into combat power.

Joining the cast are Kousuke Toriumi as Apollo, Eri Kitamura as Medea, Jun Kasama as Samael, and Kunihiro Kawamoto as Archon. Toriumi previously appeared in Sentai Daishikkaku, while Kitamura recently worked on Dosanko Gal wa Namara Menkoi. Kasama draws from his experience in Haikyuu!! To the Top, and Kawamoto has credits in Naruto: Shippuden.

The main cast remains anchored by Ayane Sakura as Siren, Nobunaga Shimazaki as Souji, Akari Kitô as Myuu, and Sôma Saitô as June. Daisuke Yoshida is directing the series at Studio VOLN, with Fumiaki Maruto handling series composition. The series began its two-cour run on October 5th. Episode 13 aired this morning at 9:30 a.m. on Fuji TV and associated networks. Crunchyroll is handling the streaming outside of Asia.