Erika’s parents want her to come home if she fails her make-up exams. She asks Nagi for help, but it may not be that easy.
It's a piece of cake, 
once I put my mind to it.
.يصبح الأمر سهلا عندما أبذل جهدا فيه
Fue centrarme y pan comido.
Quando mi ci metto è un gioco da ragazzi!
Quando eu levo a sério,
fica moleza pra mim.
Когда я серьёзна, мне горы по плечу!