Breaking the world : New Adventure

Brenn Aelyz is a young man who worships the goddess Ceia. Since childhood, Brenn has never learned any magic, his mother never taught him. Because she can only do healing magic. According to her, only the ability to swords is the most important. So that Brenn only practiced his sword skills which he learned from his mother. When Brenn turned 15 , he went to the academy to study magic. Before entering the academy, students are required to take an element test and a blood test. Unexpectedly....... Why is brenn's talent only a healing element ? well maybe this is still commonplace, because the fruit doesn't fall far from the tree. But ... Why couldn't he learn other elements ??? And to make matters worse , Why is the blood test result I ??? Which blood I is the blood of illegitimate children. Is there something wrong with the test? Or is there something wrong with brenn?