It was a beautiful morning. Rengouji was training sword fighting with his father as usual, and his mother was cooking. Suddenly, both Rengouji's father and mother felt an intense killing intent. Rengouji's father said to him with a frightened voice, "My son, run away as fast as you can." Rengouji didn't understand why his parents were showing such fearful expressions, but then he saw an A-Rank Antiko monster about 100 meters away from them. Rengouji wondered: How is it possible that an A-Rank monster has come into the Safe Zone?
Only Rank F to E monsters should be here. But Rengouji didn't have much time to think, as he soon heard his father's voice: "Rengouji, what are you doing? I told you to run away!" But it was already too late. The Antiko monster moved so quickly that Rengouji disappeared completely from its line of sight. However, the monster didn't vanish. It was right behind Rengouji, but no one had noticed it. When Rengouji's father felt the killing intent from the monster again, it was already too late. The monster grabbed Rengouji by the neck and began to strangle him. But just a few seconds later, Rengouji's father cut off the monster's hand. Rengouji fell to the ground, gasping for air, until his mother used a forbidden spell. This spell was teleportation, which transported Rengouji far away from his home. The monster was surprised that a human could use a forbidden spell and started to talk to them. It said, "Too bad you only teleported him.
You all should have teleported, because now you're going to die here." Rengouji's father said, "It doesn't matter if I die with my wife here. As long as our son is safe, I don't care about anything else." The Antiko monster replied, "Do you really think your son is safe on this island? This is where the most dangerous monsters in the world live." Rengouji's mother answered, "Our son will survive here without us. We've taught him how to survive on this island since he was little." The monster said, "It's a shame that you won't get to see if your son will make it out alive." The monster then began attacking Rengouji's parents. They fought with all their strength against the monster, but it was simply too strong. The monster easily dodged and blocked every attack. Rengouji's parents were shocked at how effortlessly the monster parried their strikes. As the situation continued, Rengouji's parents had no choice but to activate the Infinity Mode.
This mode exceeds human limitations, making one 2-3 times stronger than before, but it also has severe side effects, such as losing one or more senses or even dying, depending on how long the mode is used and how much the body is overloaded. Rengouji's parents fought hard against the Antiko monster, and slowly, they began to gain the upper hand. But when the Demon monster realized that it couldn't win without magic, it activated its ultimate mode.
Now that the Demon Antiko had become much stronger, it slowly began to corner Rengouji's parents. The battle was epic because there are very few men in the world who can match an A-Rank Antiok Demon. 20 minutes passed, and they were still fighting, but slowly Rengouji's parents were running out of strength. Meanwhile, Rengouji was running as fast as he could toward his parents. He could feel the mana of his parents, so he knew they were still alive.
Five minutes later, a huge explosion erupted near where his parents were. Rengouji was shocked and wondered if even more high-ranking monsters had joined the battle. But suddenly, he could no longer feel his parents' mana. He ran as fast as he could toward them. About 10 minutes later, he reached the spot where he last sensed his parents' mana. There, Rengouji found his parents—both dead. They hadn't been able to win the fight. Rengouji fell to his knees, overwhelmed with grief.