Emilia tried to warn the villagers of Arlam that danger was coming and they should evacuate, but was not well-received. As she's pondering what more she can do, Wilhelm arrives at the mansion with a message... Subaru and Julius face off against Betelgeuse's Unseen Hand. However, as one Unseen Hand after another is launched their way, the two heroes find themselves completely on the defensive.
I once saw a research account of 
a similar subject in an old book.
في كتاب قديم، قرأتُ عن بحث حول موضوع مشابه
Vor einiger Zeit habe ich in einem
alten Buch von so etwas gelesen.
Leí sobre la investigación
de algo similar en un libro viejo.
Leí sobre la investigación
de algo similar en un viejo libro.
Je suis tombé sur des recherches
à ce sujet en lisant un vieil ouvrage.
In effetti, ricordo di aver letto 
qualcosa di simile su un testo antico.
Num livro antigo, eu me lembro de ter 
lido algo sobre uma pesquisa disso.
Я видел в старой книге
отчёт на похожую тему.