Are you really the developer of this game?
Photo number 1 is on the bus in episode 1.
Photo number 2 is from episode 2, in Jeongwon’s room.
Package-lock.json
Can you see the Package.json file?
Episode 2 Jeongwon connected his smartphone to his laptop in his room and did something, and it was a package.json file. And a GetLastError message also appears...
Maybe Jeongwon is entering the game's virtual world himself and playing the game in order to find and fix bugs.
And Lee Yoon-seo is an AI, not a real person, and only the students who scanned the QR code are real people. In other words, a student named Lee Yoon-seo is a virtual character created by Jeong Won-i, who does not exist in reality.