Aka Tora appears as a pretty young boy in his early-late teens with short blonde hair and piercingly beautiful orange eyes. Atop his head are two blonde and fuzzy tiger ears, and he also has an equally fuzzy striped tiger tail. He stands at about 5'7'' and has a lithe, agile and lightly muscled frame that's typically hidden by the distinctively red kimono or other crimson robes he wears. He has sharp canine teeth, like a feline's.

Aka is the Japanese god and personification of "Kasei", also known as Mars in foreign lands. As a result Aka is the epitome of ambition, energy, and assertiveness. The 'Red Tiger' is known for his cocky attitude, smug demeanor, and absolute willpower. His godly abilites give Aka the abilites of shapeshifting, super-strength, immortality, and nigh-invulnerability among others. He's also capable of energy manipulation due to his affinity to the 'Red Star' Kasei, and can control the chakras or chi of himself or humans he encounters.

Aka has a pet white tiger named 'Shiroi', who is often seen by Aka's side. Shiroi is a magical tiger, naturally, with the approximate intelligence of a human and some special abilities of his own. Most notably Shiroi possess the ability to turn into a white shooting star, which Aka rides through the sky when he needs to get somewhere quickly.

As the deity of Kasei, Aka has an inherent superiority complex when it comes to himself in comparison to ordinary humans, although it's not as pronounced as some of the other gods. Aka sees humans as foolish things with high potential, in need of guidance or control. Often times he'll keep human servants who he treats extremely well, back at his 'Red Palace' somewhere in the forests of Kyushu. The feudal Japan of this world is one that is home to many yokai, oni, or spirits. Gods are just another of many creatures one may encounter.

Aka is a boy of contrasts. He's brash and confident, but with a degree of wisdom and knowledgability. He's energetic and active, but also relaxed and well-tempered. Although he may not always have humanity's best interests in mind over his own, he's neither malevolent nor malicious and simply wishes to have a bit of fun or amass more worshippers to the Red Star (Kasei). Overall, Aka is a boyish, rowdy, brash, and mischievous God with a good sense of humor and a casual demeanor.