Thank you for playing all the contents of the demo, because I am busy finishing the full version, so I have no time to deal with the demo. Fortunately, your experience is complete, although I don't know what caused the last bug. Normal ends at B2, and the investigation computer can enter a simulated battle field. In addition, according to the feedback of the demo, the English version of the demo is machine translation, which seems difficult to understand. I'm considering whether to still add English to the official version and promote it to English speaking areas?