Shiroe and his friends have come to the Depths of Palm to reach the Sacrifice Clan's gold.  The underground labyrinth is filled with powerful monsters that wear them down in a war of attrition.  Meanwhile, Akihabara, Akatsuki hears about the "Teachings".  She's very interested to know that by completing a high level raid, she can greatly improve the level of her techniques.
I'd guess twenty days total.
Zusammen mit euren 20 Tage.
Supongo que veinte días en total.
En tout, on pourrait tenir
une vingtaine de jours.
Direi sui venti giorni, se li uniamo.
Vinte dias, eu acho.
Дней на двадцать… примерно.