What is the fine-grained topic of the following text: does it even matter,ichigo only has control over his mind in hollow form that doesnt mean he is at his strongest when hollow ichigo takes over when he only has half the mask ,he still has much too learn in how to full grasp the full control of his hollow powers and learn how to use them to the max . Only return the topic.
Ichigo's control and development of his Hollow powers in the anime series Bleach.