Civit Gartland, known as Humanity's Strongest, comes for Seras on the order of Neah's Emperor Ortola—the man she once served faithfully. This discovery shatters her spirit, so Touka steps in with a dangerous gambit to save their lives.
So using them as lab rats... 
doesn't bother me at all.
‫لذا لا يزعجني استعمالهما كفئران تجارب.
Sie als Laborratten zu benutzen,
macht mir nichts aus.
No me da pena experimentar con ellos.
No me sabe mal experimentar con ellos.
Qu’ils me servent donc
de rats de laboratoire.
Quindi usarli per sperimentare le mie skill
 non mi disturba affatto.
Então usar eles como cobaias
não me incomoda nem um pouco.
Так что пусть побудут
подопытными кроликами.