Subaru heads to Roswaal's mansion in hopes of finding out what's going on there and how he can fix it. He has Frederica and Petra evacuate to Arlam Village to protect them from Elsa's attack, then heads to Beatrice's forbidden library. He tries to get Beatrice out of the library, but her wishes don't align with his plans, and their discussion goes nowhere. Then, against all logic, Elsa finds her way into the forbidden library...
If you think shadow magic can't be 
used offensively, you're very naïve.
إذا ظننتِ أن سحر الظلّ لا يمكن استخدامه
هجومياً، فأنت ساذجة جداً
La magie des ténèbres possède aussi
des sorts d’attaque.
Sei una povera ingenua se pensi che la magia dell'ombra
non possa essere usata per attaccare.
Se acha que magia das trevas não pode ser
usada de forma ofensiva, você é muito inocente.
Наивно думать, что у мага тени 
не найдётся атакующих заклинаний.