Credit to @Tim_Here, Nippon TV (脱出ゲームDERO !), John Powell (music), and Roblox. (Mouse over Japanese text for localization, or over Й to see the expressions behind more clearly) Й, П and ъ answered three questions correctly, so one of them is now unhooked, namely Й. So, Й must now do the Keybox Challenge. Й is heading towards the challenge box as the 30-second timer starts, ready to retrieve a key. How will Й handle it? If you are curious how the Keybox Challenge works in real life, here's a YouTube video of actual DERO!: https://youtu.be/wJUOWN4tg6A?t=341