境界触发者

"Boundary Trigger" tells the story of the ordinary high school student San Yunxiu, after meeting the nearby people Idle Yuma, in order to be able to advance to the A-level. A story of constant effort. Sanmen City, a city with a population of only 280,000, opened the door to another world. The invaders from the other world wantonly ravaged the city near the gate, causing the entire Sanmen City to fall into panic. At this time, a mysterious group appeared suddenly and repelled the people from the near circle. They were called the border defense organization, and they established a base near Sanmen City, hoping to continue to fight against the people from the near circle who came to harass them. Four years later, Yu Zhen, a citizen of the near world, came to another world to look for his father's acquaintances, and met San Yunxiu here

In order to be able to understand the truth about the people near the border, San Yunxiu decided to guide You Zhen to explore in a different world on the one hand, and on the other hand Keeping close to You Zhen and discovering the weaknesses of the people in the neighborhood so that he can fight with them in the future, San Yunxiu, with the help of the Realm Defense Organization, began to study You Zhen's weaknesses.