A boy named Arya was climbing up a gentle sloped hill and was holding a lot of luggage along with a bear he tamed using a temporary contract that was also carrying luggage for the hero's party. Arya is in a world called Isekai where there's magic everywhere and clashing of swords hunting of beasts. In this world there is a hero's party who set on a quest to defeat the demon king who is on a mission to take over the world.

Arya was kicked out by the hero's party as they thought he was weak and a burden to them. He pleaded with them as he wanted to take revenge on the demon king as he had destroyed and killed everyone in his village. But they did not agree with Arya. He was sitting and thinking what to do. He decided that he would take rest for a few days before he started his journey to take revenge. Thankfully the hero's party had given him some money and he fell asleep thinking about it on his bed. The next day Arya started exercising and the hero's party was searching for another tamer who could carry their luggage but they couldn't find anybody like or better than him. As Arya was special he was born in a special village of tamers he could tame any kind of beast like insects, monsters, animals and more. He could tame multiple beasts at the same time. No other tamer could do this and they also called the hero's party mad people as there is no such person who can do all that. Arya had also helped them keep watch with many insects at night. Arya registered as an adventurer and set out on a journey. After taming a wolf he successfully tamed his ten thousandth beast, making a milestone in his long journey and m j he got a special skill and he could get the skills of the beast he tame's and combine similar skills to boost its efficiently. Now with this new skill he started taming many animals that are strong and hide them in his shadow after a week of training he mastered his skills which were combined and from an F rank hunter he went up to a C rank hunter by taking many quests and getting strong. His regular exercise was intense and his physical strength and agility had increased which also increased the power of his skills and he kept a few beasts that could help him and freed the rest as could not feed and take care of all of them. He left on a journey taking some basic supplies with him which is needed for survival. Then while he was travelling he found the hero's party they pleaded for him to join their party again. Arya told the hero who was leader to fight him in a battle if the hero defeat's him he would join the party again but if the hero loses the hero had to leave Arya alone. The hero was overconfident and accepted my challenge. Arya was stronger than the hero and defeats him with ease everyone in the party were astonished by Arya's strength and Arya told them that he would defeat the demon king and take his revenge. Then he summoned a cool looking beast with wings and flew up in the air with joy. It was getting dark so Arya found a plain area where he set up his tent commanded his wolf and go hunt for meat Arya also gained a skill called item box a space where he can store anything he wants and the space of storage was endless he collected some branches set them on fire brought out a pot and some spices and butcher knives and when his wolf came he summoned all his familiars (the beasts that he has tamed) and started cooking the meat and they ate and slept. The next day Arya continued his journey he found a town which was heavily guarded because it was near the demon kings castle. Then he decided to stay there for 2 weeks and get stronger. In the first week he exercised as usual and started taking many guild quest and leveling up in the process taming more animals and gaining more skills and soon after taking the most dangerous quest in the guild he was in S rank the highest rank. In the second week he as usual exercised regularly and started improving

And learning how to use his skills and by the end of the week he maxed out all his skill levels his physical strength and agility and of course his special skills. Then he bought his familiars equipment and trained them and tamed the most powerful beasts like wyverns and dragons. He went over to the demon king and challenged him before leaving he informed the guild that I was going to challenge the demon king and told them to evacuate the town. Then the demon king called his four great generals and I called my four most powerful beasts .The demon king and I were engaged in a fierce battle and then I remembered that I had tamed a highly poisonous bee which could kill anyone in an instant I activated its skill and one punch in the gut he died in an instant. Everyone was happy and sad because their village was destroyed from our fight. The village was happy as the demon king died. The world was at peace I was declared the true hero and savior of Isekai.