Bump: One Day I Received a Strange Internal Beta Qualification USB Flash Drive

One day, I turned on my phone out of boredom and saw that the anime I had been longing for was going to be released as a closed beta game. I clicked on it with the mentality of getting it. As a result, I didn't expect that on the seventh day, I received a strange express delivery. There was only a letter and a USB flash drive in the express delivery, and nothing else. (I can't tell you anymore, otherwise, if I expose you too much, I won't watch it)