if you would like more information, i can direct you to the official Anima site here.
if you are looking for some art from Anima, you can always visit Wen-M on deviant-art, he does 85% of the art for Anima.
as far as first hand accounts, i'm a 2.5 year Anima veteran, The base setting is wonderfully thought with the world's history and events occurring mostly in the shadows, which have had a major impact on the current year. It is a low-mid fantasy setting which can escalate quite fast depending on the GM or campaign being run. It may be a little hard to undertake by yourself to learn the rules for the 1st time, but like any TTRPG, you get used to it quite easily.
Anima is a d100 game system, but it is not a Percentile system. What i mean is that you roll 1d100 and you add to your ability to determine how good you do something.
there are 20 base classes to choose from, each with a single/combination of archetypes: Fighter, Prowler, Domine, Mystic, Psychic, Novel
The magic system has a Mana pool, known as Zeon. This is regenerated daily dependent on one of your abilities. To cast spells, you must first Accumulate the zeon to launch it. Spells can be "buffed" by investing more zeon into them. The spells come in different "Spell Books" which you can learn by spending Magic Level, each book has an opposed path which cost Double ML.
There is a Ki system which let's characters use techniques and learn special ki abilities. So yes, you would be able to recreate the Kamehameha if you really wanted to, or you could run on water and what not. Same as magic, to use ki techniques, you must first accumulate Ki to use them, but most ki abilities just take it from your ki pool. These are generally regenerated 6 every hour.
The Mentalists(psychics) have unlimited use of their powers, but if they fail activating a power, it can cause them to die if the Fatigue loss is too big. Lower powered abilities have a smaller backlash than higher powered abilities. Psychic potential determines how well you can use these powers and how strong they can be made.
There are also Advantages and disadvantages that each character can have. PCs start with 3 Creation Points and can buy up to 3 disadvantages to gain more. so you might find 2 characters of the same class be COMPLETELY different in gameplay just by the advantages and disadvantages they have.
There are also Weapons modules, Style Modules and Martial arts, where you can learn to do certain maneuvers for cheaper or learn to use many different weapons or just plain old kick some butt with a kung fu master. there is a wide variety of each with their own different benefits.
i hope this was informative enough, if you wish to elaborate on a subject, or have questions pertaining to anything else, feel free to ask.