Kyōfu Kakuchōsei

By using Piercing Arrow Strike as a medium, senku gains the ability to induce and manipulate the fear of his targets. The user can manipulate fear, whether increasing, decreasing, causing or otherwise chancing fear, even manifesting the emotional energy to physical level. Users of this can make others fear even the most harmless of things to the point of becoming catatonic. Despite their considerable attack strength, the true power of these thorns lies not in their offensive capability, but instead in their ability to induce limitless fear in those who are struck. Just a single wound is enough to inspire a deep-seated fear towards Senku, causing victims to doubt everything, lose control of all rational thought, and see visions of their deepest fears. While this would typically result in instantaneous death due to a person's heart being unable to bear such intense shock, an individual's experience and willpower can be used to resist this fear to an extent, though Senku is confident all would succumb to it eventually. The user is able to augment the fears of others. They could make an aerophobe so afraid of flying that they never set foot on a plane/airport or even die of fright when the plane flies. Any fear can be amplified to the point of the victim dying of fright, usually a heart-attack. The user of this power can sense the targets fears or phobias so they can use the power effectively.