Tsuihou sareta Tensei Juukishi wa Game Chishiki de Musou suru

On their fifteenth birthday, everyone receives a special class through the Ritual of Divine Blessings. Born into an elite family of master Swordmen, Elymas is expected to inherit his father’s legacy. Instead, he receives the Heavy Knight class, which everyone believes is weak and useless. 

Disgraced by his family, Elymas loses his position as the future head of the household and is exiled. Most people think Heavy Knight is slow and incapable of becoming powerful. However, Elymas remembers his past life where he used to play a game that was similar to his life. He knew that a Heavy Knight is more powerful than any if its abilities are used correctly.  Using his past life knowledge, Elymas begins his journey to become stronger and prove everyone wrong.