It's day one of the festival, and Rimuru finally gets to see all of his friends' performances and presentations. As he's enojying the festivities, he's summoned by Luminus...
in weapons that have undergone 
a certain degree of growth
في الأسلحة الّتي خضعتْ لدرجة
مُعيّنة من النموّ
die von ihrem Besitzer
lange verwendet wurden
e più l'effetto della pozione curativa
è visibilmente maggiore.
em armas que tiveram
certo grau de crescimento
целебные зелья действуют только на вещи,
которыми долгое время пользовались.