You will study several open-hand Kata and one weapon Kata in your studies to achieve your Brown Belt. The three open-hand forms focus on the derivation of speed and power. The weapon form deals with use of the Tanto (knife).
When dealing with the open-hand forms be very cognizant of when the form forces you into a frozen state. There are times when this is beneficial, but there many other times when it is detrimental. Part of the exploration of these hard and focused forms is to allow you to both see how to derive great power when needed, but to also understand the consequences such power utilization. You will also want to explore the movements in these Kata to understand where and how power can be applied without any freezing. This will rely upon some fundamental knowledge you acquired many years and many belts ago.