Destination of Crybird

A young man who struggled with all his might, but instead was crushed by the limits of his own talent finally gave up on becoming a top ranked person and lost his life dramatically.
This man was born into a different world called Riiguyuuru (リーグユール) that has concepts such as magic, skills and levels as Rarukusu Kuraibaado (ラルクス・クライバード) / Larks Crybird with the memories of his previous life. He was born with a unique skill that allows him to possess any skills in existence by putting in effort. Rarukusu once again started to live there, while aiming to be the strongest.
However in this world, there are countless monsters that can not be beaten by merely relying on swordsmanship or magic. Currently monsters are quite aggressive and humanity is slowly declining. In such a world how will Rarukusu / L’arc , who keeps aiming to be the strongest while faltering from time to time, end up?