"You will be the foundation of a new legend. For that legend, I will give you another chance."
The last heir of a founding family has fallen and cursed as a third-rate mage, Russel Raymond. He hopes to restore his family's social status but is expelled from the academy. All he can do is work as a third-rate mercenary mage. One day, on his way to a temporary job, his mother's keepsake ring, the "Dragonheart," reacts, and Russel is granted an unexpected opportunity. He is "sent back" to his academy days.
"You have received a mana stone (consumable item) as a mission reward."
That's how Russel begins to advance in life. Like a dragon never given the chance to spread its wings, he surmounts the waves named fate that weighed him down and soars into the bright world he was once forbidden from.