Why can't zentisu learn other forms?  

Why can't zentisu learn other forms?
He never wanted to learn any breathing techniques or fighting techniques nor he wanted to join the Demon Slayer Corps. He was forced(not in a bad way) to train because his Master Jigoro Kuwajima saw potential in him, but despite of rigorous training He could not learn more than one form.His training was cut short before he could master the other forms, although the first one serves as the basis for all of the others. He actually learned(made) a new move in the manga but let's just keep it in the anime. He only uses one move because he has a hard time with electric breathing.
#anime #demonslayer #tanjiro #zenitsu #kimetsunoyaiba #muzan