Koharu gets frustrated by Hiyori trying to help her so much as she's fishing and Koi celebrates her sixteenth birthday.
Here you go, Koi! Happy birthday!
!تفضلي يا كُوي، عيد ميلاد سعيد
Für dich, Koi-chan!
Alles Gute zum Geburtstag!
Aqui, Koi-chan! Feliz aniversário!