"Waaahhhh!... Onee-chan... Why?... Waaahhhh!..."
"It's your fault, Vier-chan... I told you, you're not ready but you keep asking for it."
In the soul realm within Vier's dream, where there's nothing but a white void, Vier is bawling in tears after finishing watching an anime movie about a group of certain sword-breathing swordsmen fighting humanoid-looking monsters inside of a train. Especially at the part where the flame-breathing swordman sacrifices himself to protect his friends and save everyone riding the train.
"Waaahhhh!... Onee-chan... Why did Rengoku have to die?... Waaahhhh!..."
"Calm down, Vier-chan. It's just a story. You don't have to cry so hard like that."
"But Rengoku... Sob...Sob...Sob... Waaahhhh!..."
"Sheesh... What I'm going to do with you? For now, how about you wake up? Your friends might help you calm down."
"Waaahhhh!..."