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.
I see. It's training for 
fighting in limited spaces.
هكذا إذاً. إنّه التدريب على القتال في أماكن ضيّقة
Jetzt verstehe ich!
Das ist Training für Kämpfe auf kleinstem Raum!
Je vois… Elle s’entraîne à se battre
dans un espace confiné !
Capisco! È un allenamento 
per combattere in luoghi ristretti!
Entendi... Ela está treinando
para lutar em espaços limitados!