Kimi to Boku no Saigo no Senjou, Aruiwa Sekai ga Hajimaru Seisen Season II EP5 - Line of Descent: Three-Sister War (AKA Alice Has Had Enough)

Invited by Elletear, Iska and his team visit the Erz palace, a vacation house owned by the House of Lou. Wary of her sister, Sisbell brings Iska along to sweep the palace for bugs. Iska is very nervous when she decides to sweep Alice’s bedroom as well. Meanwhile, Alice hurries her way to the Erz palace to stop Sisbell from discovering her forbidden secret. When the three princesses come together, Iska may find himself between a rock and a hard place...!