Episode 20

About SI-VIS: The Sound of Heroes

A co-ed music group secretly operates as heroes, converting audience energy from live performances into combat power to battle mysterious world-threatening forces while maintaining their public cover.

Explore SI-VIS: The Sound of Heroes

• Character Relationship Map — Visualize character connections and alliances across the series.
• AI Story Visualization & Plot Analysis — Story structure, emotional arcs, and narrative turning points.
• Full Series Character Map — Cross-season character arc tracking and relationship evolution.

Credits

• Job

  series composition

  Department

  writing

  Fumiaki Maruto
• 

  Job

  actor

  Department

  actors

  Character

  Kyōya (voice)

  Anan Furuya
• 

  Job

  actor

  Department

  actors

  Character

  Nagi (voice)

  Manaka Iwami
• 

  Job

  actor

  Department

  actors

  Character

  Sōji (voice)

  Nobunaga Shimazaki
• 

  Job

  actor

  Department

  actors

  Character

  Siren (voice)

  Ayane Sakura