According to the test results, 12 people divided into two groups will take turns to participate in the battle. About 3 hours, a group of people will be completely exhausted and fatigued to the highest level. The raft will return to the position once every 3 hours, and everyone can get a half-hour break. With the exception of Furukawa, the members of the night song participating in the battle can choose to replace them according to the situation. After the raft is launched, it is difficult to be carried ashore, and it can only be stopped in the pool to consume durability. However, any problem that can be solved with money is not a problem. In the face of high-speed upgrades, this loss of night song can be supported. In order to make the battle smoother, Furukawa had to expose the upgrade