Rise of the Nobleman's Second Son

Arad, once trapped in a ruthless company in his past life, is reborn as a noble in another world and lives the easy, carefree life he always wanted. But he has one frustration: every year, the once-in-a-lifetime “Divine Lottery” fails him, leaving him unable to use magic. Everything changes when he begins to see mysterious mana fragments left behind by spells. What’s more, by collecting them, he can learn those spells himself. What begins as a secret ability soon sets Arad on the path to becoming an unparalleled noble and legendary archmage.

(Source: WEBTOON)