If I have only certain specialties, this must mean I am restricted to the techniques or jutsu of that specialty. Right?"
Not true. Here we allow for jutsu or technique to be learned, regardless of what your chosen specialties are. Crazy, right? Not so much. While one could have the capacity to perform jutsu not of thier specialty, they are forced to pay twice as much chakra or stamina one would normally pay if it were. This increased cost denotes the lack of skill in the usage of the jutsu/technique and CANNOT be loopholed or ignored.
Can I combine specialties in order to make jutsu or technique that qualify as both?
Yes, to put it plainly, you aren't restricted to make jutsu/technique that are strictly of one specialty. However, always remember that in doing so you must explain why the jutsu/technique in question is a combination of twio specialties.
Am I limited to the amount of specialties I can have?
Yes. As there is a ranking system you will be limited based on your rank. As you rank up you will be able to select a new specialty if that new rank allows it.
Specialty Limits Based on Rank
D - Elite C : 1
B - A: 2
Elite A - S : 3
Elite S : 4
Ninjutsu is a term referring to almost any technique which allows the user to do something that they otherwise would be incapable of doing, made possible through the utilization of one's chakra. Unlike Genjutsu, which makes the opponent see illusions, the effects of Ninjutsu are real. They vary greatly in purpose, with the simpler Ninjutsu serving such tasks as transforming the user or allowing them to evade attacks. These techniques are often second-nature for experienced shinobi, who can use them at will. More complex Ninjutsu manipulate one's surroundings or utilize the elements.
Genjutsu are techniques that are employed in the same fashion as ninjutsu, requiring chakra and hand seals. However, the primary difference between the two is that the effects of genjutsu are illusory; instead of attacking the victim's body, like taijutsu or ninjutsu, genjutsu techniques manipulate the flow of chakra in the victim's brain, thus causing a disruption in their senses. This includes creating illusions, stealing information, and controlling your opponent’s actions. There are various different methods of triggering an illusion. As far as the effects of your Genjutsu are concerned, there may be none that are physical (as Genjutsu is purely illusionary) and no effect may be permanent (when the technique ends, all effects end). When it comes to triggers, we allow for creativity such as combining Genjutsu with seals (if you know Fuuinjutsu). However, if you're only applying Genjutsu then your trigger must be activated by one of the five basic senses. Such as them looking at you, a certain part of you or a weapon in the case of Bukijutsu users.
Taijutsu refers to any techniques or fighting styles involving the martial arts or the optimization of natural human abilities. Taijutsu is executed by directly accessing the user's physical and mental energies, relying on the stamina and strength gained through training. It typically does not require chakra, though chakra may be used to enhance its techniques. Taijutsu generally requires no hand seals to perform, occasionally making use of certain stances or poses, and are far quicker to use than ninjutsu or genjutsu. Taijutsu is simply put: hand-to-hand combat.
Bukijutsu refers to the general use of weaponry, as well as the ability to perform bukijutsu techniques. Bukijutsu techniques are any technique that acts either through or upon a weapon. Therefore, a bukijutsu technique may not directly enhance the physical prowess of the user but may otherwise increase the effects, speed, strength or other characteristics of their weapon or weapon attack. Bukijutsu techniques that enhance or work in conjunction with a wielded weapon do not typically require handsigns. The maximum ranking of weapons you are able to wield is determined by your proficiency with this specialty.
The medical specialty covers a wide range of helping, assisting and healing techniques. It is a specialty that focuses on healing wounds, attending to injuries and making sure wounded allies, including themselves, are taken care of. In addition to healing damage, medical can take care of other damage like burns, amputees shocks or poisons. Medical however is not just about helping, but can use their skills to deal damage, craft potions or poisons, identify types of wounds and have extreme knowledge of the human body.
Fūinjutsu are a type of jutsu that seal objects, living beings, chakra, along with a wide variety of other things within another object. Fūinjutsu can also be used to unseal objects either from within something or someone. By using chakra someone can draw out a symbol which can then seal an object, item or even a jutsu. Normally this seal is formed with hand signs then placed on a solid surface, however more advanced users can bypass these restrictions.
Puppetry is the art of constructing and manipulating a contraption created out of various material such as metal and wood, and equipping said puppet with a variety of weapons and tools to assist the puppeteer in combat. Masters of this art are able to manipulate multiple puppets at once, and can even craft tools and puppet parts to be attached to other people. They excel at mid to long range fighting, and are able to stay out of a dangerous environment while using their puppet to do all the work for them.