Journey of an Exiled Middle-Aged Adventurer Becoming a Hero

Adventurer Kyle has been steadily working solo for ten years since he was expelled from the party for being incompetent.

He is now 30 years old, and people think it is time for him to retire from being an adventurer due to his declining physical strength, but for some reason he has become able to defeat the highest ranked monsters with one punch.

Suspecting that he may be under some kind of curse due to his skyrocketing ability growth, Kyle undergoes a medical check-up for the first time in a while. But what the doctor told him was-.

“You have deviated from being human due to the awakening of [late bloomers].”

What was happening to Kyle was the awakening of a unique skill [Late Blooming] that increases his status little by little every day!
Knowing that he is in good health, Kyle accepts an invitation from budding adventurers Elisa and Yui to join their party “Proof of a Hero” and begins a new life as an adventurer… An exhilarating adventure drama about such a late-blooming and strongest 30-year-old!