His only family, his younger twin, has been murdered. He isn’t as talented as his late genius brother, but in order to get his revenge, he will become “strong”. Will I be able to get my revenge?

From Game of Scanlation:
Trainee Knight Trudia gets kicked out of the knight squad because of her hot headedness. In midst of trying to find out where she'll go next she finds an old man that's in danger. She runs over there without hesitation in order to save him only to meet a man that'll change her fate forever. A story of a dying girl and an undying man trying their hardest to live.