Saikawa visits Miss Kobayashi's home to play. However, there's a girl that's unfamiliar to her (Ilulu)... Even after inviting her to join their games, Ilulu coldly refuses. Then Lucoa happens to stop by and she notices Ilulu's feelings as she tries to avoid them, so she makes an effort to help the dragon out.
They become maid outfits 
because a maid wears them.
يصبح زيّ خادمة لأنّ خادمة ترتديه
Die Kleidung,
die eine Maid trägt, ist ihre Uniform.
Si el traje se llama así porque
lo llevan las sirvientas, significa que…
Si el traje se llama así porque
lo llevan las sirvientas, significa que…
L’habit d’une domestique,
c’est ce qu’elle porte.
Diventano divise da cameriera nel momento in cui 
a indossarle è una cameriera.
O uniforme é de maid
porque uma maid o veste.
Одежда, которую носит горничная,
и есть её форма.