As Keita pursues Kotoko, Naoki begins to act distant, making Kotoko worry that her marriage is over.
I'm a six-year veteran when it comes to jealousy.
habe ich sechs Jahre Erfahrung,
was Eifersucht angeht.
soy un veterano con seis 
años de experiencia.
soy un veterano con seis 
años de experiencia.
j’ai passé six ans à être jaloux.
Eu passei seis anos sentindo ciúmes.