Kotoko is finally a full-fledged nurse, but worries that due to her lack of experience, she'll be a burden on Naoki.
I worked so hard to become a nurse.
Ich habe so hart gearbeitet,
um Krankenschwester zu werden …
Trabajé tan duro para ser enfermera.
Trabajé tan duro para ser enfermera.
Je suis enfin devenue infirmière.
Me esforcei bastante 
para me tornar enfermeira.