Four Lobes

is a special self-induced combination of Barrier Ninjutsu and Chakra Flow unique to Senkai.

Usage
Senkai places two fingers in his forehead to induce the technique. Immediately, chakra spreads through his four lobes in his cerebral cortex:


 * Frontal Lobe (前頭葉;Zentōyō): associated with reasoning, planning, parts of speech, movement, emotions, and problem solving.


 * Parietal Lobe (頭頂葉; Tōchōyō): associated with movement, orientation, recognition, perception of stimuli.


 * Occipital Lobe (後頭葉;Kōtōyō): associated with visual processing.


 * Temporal Lobe (側頭葉;Sokutōyō): associated with perception and recognition of auditory stimuli, memory, and speech.

The chakra connects to all four lobes, which has its own epicentre that is used to erect a barrier around the lobes. This barrier is created with the Yin Release and when activated, blocks off any other chakra that is not the user's from passing into the lobes, thus rendering immunity to genjutsu; whether visual, sound-based or even any other sense. Furthermore, Senkai can manipulate all four lobes by fueling them with lightning release, forcibly increasing the speed of his stimuli, thus increasing his reaction time to be on par with the famed Sharingan itself, allowing him to percieve incoming fast-paced attacks and react accordingly. This also manipulates the entire body by sending the responses from the brain to increase the use of his muscles to 50%, rather than the normal speed, greatly boosting his speed to be on par with the third gate, even though the latter uses more muscles strength, a testament to Senkai's speed.

Drawbacks
The first drawback is that the user slowly loses 1% of chakra for every 5 minutes which the technique is activated.

The second drawback is that, when the user fuels their lobes with Lightning Release, they experience slight whiplash immediately after deactivating it.