Wakana felt relieved just for a moment after they got all of the materials they needed for Marin's cosplay, but then he's shocked to find out that he needs to finish the cosplay in two weeks. On top of that, his grandfather, Kaoru, hurts his back, so Wakana has to run the shop and he also has midterms. Wakana feels overwhelmed and gets depressed, wondering if he'll ever actually become a kashirashi at this point.
If I skip even a day, it takes another 
three days to get the hang of it again.
إذا فوّتُّ يوماً واحداً فقط، يستغرق الاعتياد
على الأمر مجدّداً ثلاثة أيّام
Für jeden verlorenen Tag braucht man
drei Tage, um wieder aufzuholen.
Tardo tres días en recuperar
un solo día que no pinte.
Tardo tres días en recuperar
un solo día que no pinte.
Il faut trois jours
pour compenser un jour chômé.
Ogni volta che salto un giorno,
Пропущу один день —
навёрстывать придётся целых три.