A sister saves her brothers, a love is found, lost, and found again, and you put an “o” in front of everything to be polite.
"Seventeen" here implies 
youth, the word "wakasa".
Una persona de 17 años es bastante joven.
Alguien de diecisiete años es joven,
"Dezessete" aqui quer dizer
 jovem e se lê "wakasa".