Midorikawa is a prodigy. Tsutsumi noted that he completed the Neighbor Simulation in 4 seconds at the first try. Before Yūma joined Border, his record was unbeaten. He was able to defeat Osamu all 10 times they battled effortlessly. Even Yūma admitted he couldn't have won if his mentor hadn't trained him as she did. While he was using a training Trigger at the time, Midorikawa decided to use only Scorpion (and not also Grasshopper) to better understand the difference between their skills. Osamu noted that Midorikawa switches tactics every time he battles to fool his opponent, to the point that Osamu, who had managed to anticipate Kazama, could not read his moves at all, but also that his fighting style was animal-like, almost erratic.Yoneya observed that Midorikawa is prone to showing off, which makes his moves less sharp. By his own estimation, Yoneya would win as much as he would lose in a match against Midorikawa, although he admitted that the latter is probably more talented. Coupled with his pride and the fluctuations in his fighting style, Midorikawa's relative inexperience makes him easily manipulable, but his crushing defeat against Yūma helped him improve his tactical thinking. Yūma too observed Midorikawa will get much stronger over time. Out of all the Border agents that fought Lamvanein, Midorikawa was the sole that could damage him fighting on his own. On that occasion, he clouded his opponent's vision with a fire extinguisher, demonstrating some craftiness in combat.
Midorikawa has reached Master Class with this Trigger and is regarded as a skilled user. His fighting style revolves around his agility. Since he often activates Grasshopper in combat, he generally uses only one Scorpion, but can also fight with two. He is capable of morphing it into a blade which extends outwards from his wrist. He was able to intercept Alektor's bullets.
Midorikawa uses this Trigger to maneuver around the battlefield in the air and to increase his speed without warning, surprising the opponent. He is widely considered a very skilled user. He can utilize Grasshopper effectively even indoors.
Pinball (乱反射,Pinbōru;?, lit. Diffuse Reflection): After creating multiple platforms around the opponent, Midorikawa bounces from one to another at very high speed. The opponent being unable to follow him with their eyes, they are open to swift strikes from Midorikawa. Kō Murakami regards him as the better user when compared to Kuga.
Border's default Defense Trigger, which erects a mobile barrier in a location chosen by the user. He is also able to activate Full Guard in front of a moving ally, protecting them as they prepare to attack. He can also combine it with those of other agents.