Explosive growth

When Yujiro realized that he had reincarnated into the body of a 2-month-old child with his previous life memory and talent. Moreover, just after few minutes in Murim orge able to sense the magical energy and even began to absorb it. The size of the child is twice the size of normal child. After one week yujiro came to know that he's in divine cult which is strongest in the world and they priorities power over everything and he's son of the vice - leader of the demonic cult, whose at the level of a divine being. Yujiro's innate talent is too strong so he has absorbed 10 year qi in just 6 months. The library and training ground is heaven for yujiro as he able to fight as much as he want and learn new techniques as well. The entire cult considered his talent equal to first heavenly demon when he defeated the first rate demon soldiers at the age of 1 year. t that time they celebrate the incoming of greatest genius in the history but yujiro is not interested in these things so just after the function he announced that he want to train in Devil's forest. The devil's forest is renowned throughout the kingdom due to strong monster reside in it, which are equal to S rank and some above. Due to his high ranking in cult, he easily gets permission for training. But his father sent the 3 demonic kings for safety. At age of 3 with the body of teen with red hair and a visible muscular body he entered the dark forest and he also sensed the dark shadows behind them. The three of them were among the 32 demonic king ranks but due to leaders words they had to follow this kid so they were quite dissatisfied. Just at entrance yujiro encounters a 3-meter-tall gorilla which is killed by just a single punch. Currently he have qi years 150 as his body asbord nature energy automatically. After 3 years he almost killed 3000 demon beasts and he finally encounter the wolf king which is known for it's speed and claws .however, yujiro smiles after seeing his opponent and then he charged toward the wolf king. After fight of 30 minute yujiro killed it which the help of his newly learned technique called invincible punch. It's a godly technique .that's why yujiro only learned first part of it which was enough to kill these fake kings with his 400 years of experience and he can now also use qi so he wants to conquer world now