There are still monsters about, and the gang is spending their days fighting them.  They go to school during the day, and when they're not at school, they protect the city from monsters.  But their peaceful routine is interrupted by the arrival of Mana Livingstone: a transfer student from America who's got the craziest ideas about Japan!
As they share a secret life of Monster-fighting
that no one else knows about,
Ihr gemeinsames Geheimnis, dass sie
im Monsterkampf zusammenschweißt,
Como comparten una vida secreta
como cazadores de monstruos
Como comparten una vida secreta
como cazadores de monstruos
Ils partagent un quotidien secret
consistant à abattre les monstres,
Essendo costretti a condividere in segreto
 questa vita animata dalla lotta contro i mostri,
Os sentimentos de um pelo outro estão
 sorrateiramente cada vez mais fortes