SAIKI HAS A YOUNGER BROTHER!?!?

A short 10 year old boy is far from being normal, with amazing luck and intellect that puts him in the same class as his older brother and physcic powers, young Kumio's life must be easy. Right?

Unfortunately the boy had a stroke after an early birth which caused him to lose the ability to move his right leg as effectively as normal forcing him to rely on a crutch, however his mother and father as well as his older physcic brother all loved him the same and were very supportive.

How will he survive life at PK Academy with his brother, whom is convinced his friends are morons and that his life is disasterous?