[quote=@LokiLeo789]
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As Geni enthralls himself in the thrill of battle, his basest instincts bend to his conscious will. By choice, he can allow portions of his body and mind to become primal, accessing senses, reflexes, and urges that lie at the very heart of all creatures. 

Immediately, each of Geni's five senses have the option to be flipped into overdrive, bombarding his transformed mind with sensory information. The acuity of his eyes become astonishing, granting him the ability to see distances and detail that few others could ever hope to experience. They also function in a complete lack of light, allowing him to fight in absolute darkness as if it were the middle of the day. Geni's ears gradually become highly sensitive, able to pick up sound from miles away and even hear the heartbeat of an enemy who comes within a few dozen feet. His nose becomes hyper-focused to a variety of odors, especially to blood, sweat, and endorphins, which allows him to essentially read the bodily functions of his enemies, giving him knowledge of their emotions and their level of fatigue. Even his sense of touch becomes superhuman; he can block out pain completely, feel vibrations through the air, and find pressure points on non-humanoid bodies through the pulsing of their veins. These senses, when used in combat, turn Geni into a veritable monster, able to fight in any situation with tremendous sensory advantages.

With his superhuman senses of sight, hearing, touch, and smell, Geni's reaction time becomes unmatched. He begins to predict the movements of his enemies, and his awareness of his environment becomes almost supernatural, allowing him to both dodge attacks and find ways around defenses that would have been difficult for others to accomplish. 

In addition to his enhanced senses, Geni gains the ability to harness the incredible strength that comes with releasing one's grip on all restrictions, becoming a beast whose body fights not to survive, but to reach the top of the food chain and crush everything else underfoot. By using this incredible source of physical power, he can gain access to a well of strength. Suddenly, he is capable of ripping through material defenses with his bare hands and the tip of his weapon. Although he is far more skilled at dodging attacks, his newfound strength gives him the option of fighting straight through them, parrying techniques that would otherwise have been hard for him to withstand. When paired with his reflexes and his unmatched senses, this strength becomes a killing weapon, something that turns Geni into a true expression of an Apex Predator—the beast at the top of the food chain.

Instead of becoming a rabid monster, however, Geni retains complete control over himself, gaining all of the advantages of the perfect beast without any of the mindlessness that goes hand in hand with such natural, fundamental power; but this is only superficial, as Geni's emotions can truly affect the mental affects his semblance can have on him, rage truly capable of making him a mindless predator. But this abilities greatest draw back its the immense fatigue our brings Geni, almost to the point of utter unconsciousness after just a few minutes.
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Isn't that basically Shiro's semblance minus the vocal component, the ability to use it for others, and the side effects?