Having worked much too hard, Mile and the others decide the Crimson Vow should cease activities for a little while. In plain terms this means... That's right, every working person's inalienable right —— a vacation! While each of the friends enjoys their time off in their own way, Mile, with her sad history as a master of spending time by herself in her previous life, goes off to savor her time off on her own, but...
Also, on an unrelated note, this episode contains swimsuits.
but I'm fundamentally bad at trying to 
be of use or make something of my own.
لكنني جوهرياً سيئة في محاولة أن أكون مفيدة
أو صنع شيء من تلقاء نفسي
aber etwas durchzuziehen oder anderen zu helfen,
ist grundsätzlich nicht meine Stärke.
Je suis nulle
quand il s’agit de me rendre utile.
ma fondamentalmente non sono brava
a essere d'aiuto o a padroneggiare qualcosa.
mas basicamente não sou boa em
tentar ser útil ou fazer algo por conta.