Tensei Shite Seichou Cheat wo Teni Iretara, Saikyou Skill mo Tsuita no desu ga!?

High school student Hayato Katsuragi meets an untimely end in a traffic accident, only to awaken in another world as Rayvelt Runwalker, the young son of a noble family. Upon his reincarnation, a goddess grants him an extraordinary advantage: a cheat skill completely free of level limits, promising boundless potential for growth. However, this divine blessing comes with a severe catch. Alongside his limitless power, he is burdened with the most perilous ability imaginable, known as "One Who Has Been Struck by Difficulties," effectively condemning his new existence to the ultimate hard mode. Determined to survive the relentless hardships tied to his cursed skill, Ray throws himself into rigorous and intensive training to forge his strength. Despite the daunting nature of his abilities, his daily life is far from bleak. He finds genuine comfort and joy surrounded by his adorable younger sister and a devoted, charming maid who brighten his days. Yet, the fragile peace of his aristocratic household is soon shattered when a massive horde of monsters launches a sudden invasion, forcing Ray to test his newfound power against an overwhelming threat.