Rui woke up in Sekai but this place looked completely different. it was dark while in Sekai WxS it is colorful and cheerful. the boy then heard Miku's voice, which instead of being squeaky and joyful it was depressed and sad

"welcome to Sekai" she said while looking at Rui "please, save him."

Rui was confused. why did Miku look so different? he turned around and saw Tsukasa who was also different

The blonde looked at his best friend with contempt. he didn't want to talk to him.