Manga Maseki Gurume: Mamono no Chikara o Tabeta Ore wa Saikyou!

In this world, only I have the opportunity to become stronger. I can do this with magic stones! Very soon I will be offered a smooth reincarnation by the goddess, however after being reborn I get a ridiculous skill, because of which even my family mocks me! However, I will soon realize that this skill allows me to absorb the powers of magic stones, which means that I have unlimited potential! Now I'm starting to experiment with magic stones through grueling training. The story of a boy who tries to become king!