Attack on Titan: the Titan Survival Record of the First Three Lives

In the third grade class, a special second game has quietly become popular, which is adapted from the Japanese IP "Attack on Titan". Li Hongjiang, Sun Kexin and the whole class have all heard of this game. One day, everyone in the class was accidentally involved in the game world and came to the crisis-ridden Parady Island. The classroom in reality disappeared, and there were only wilderness, ruined old towns, and giants wandering around.