Hayama Hiyori is a high school student and professional singer. Unable to succeed commercially, her agency terminates her contract. Unwilling to give up, she decides to participate in Extreme Hearts, a sports event for musicians and performers.
The world of competition is 
harsher than you know!
!عالم المنافسة ليس مكانًا لطيفًا
Die Welt der Wettkämpfe
ist unverzeihlich!
¡Ese mundo es una jaula de leones!
¡Ese mundo es una jaula de leones!
Tu sous-estimes
le monde de la compétition !
Il mondo dello sport competitivo
non è così gentile!
O mundo da competição é mais
duro do que você pensa!
Мир гиперспорта безжалостен!