All STR Sorcerer

Sensing shifts in mana, successfully manifesting it, and attending the most prestigious school at the top of his class at a young age, Ruin Ardell is on track to become a great mage. Everything was going smoothly until he discovered that he had a condition preventing him from expelling mana. Ruin’s tumble from grace gave those jealous of him the opportunity to toy with him. But in the depths of his despair, he discovers a miracle in the form of a system message.

(Source: Tapas)