To begin with, only one Sunset was actually banned by Diah during the stream.
Nevertheless, the reason so many Sunsets were trembling with fear was due to the one-on-one chatroom with Diah.

-Click─!

[PineapplePizzaJMT] - Opening Notepad.

“What could you possibly want to write in your notepad~?”

Diah, with her lightning-fast reaction time, immediately caught any suspicious messages that flashed by in the chat.
Then, she initiated what could only be described as “intense interrogation,” pressing the Sunset to explain themselves until they confessed.

The scariest part of this interrogation process, however, was...

“Huh? Why aren’t you answering~?”