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.
After all, in the eighteen 
years of my last life,
فأساساً، في الثمانية عشر عاماً
،من حياتي السابقة
Ich hatte in den ganzen 18 Jahren meines letzten
Lebens schließlich so gut wie keine Freunde!
Al fin y al cabo, nunca tuve amigos
en los 18 años de mi primera vida.
Al fin y al cabo, nunca tuve amigos
en los 18 años de mi primera vida.
Dans ma vie antérieure,
je n’ai eu aucun ami en 18 ans.
In fondo, nei diciotto anni della mia vita precedente,
Afinal, nos 18 anos que passei
na minha vida passada
Ведь у меня, по сути, не было друзей
за все восемнадцать лет прошлой жизни.