No matter how hard you try, sometimes it just doesn pay off. After losing his life in an accident and being reincarnated in another world as the eldest son of an aristocrat, Eberhardt finds a unique skill called [Perseverance is power] on his status screen.It is an ability that allows you to become stronger the more you try... While spending time with his fiancée and childhood friend, two girls, Eberhardt strives to become the strongest in order to protect the people he cares about! With the power to make his efforts rewarded, he will finally find happiness! The classic growth story begins!!