As a member of a unit in the upper tier of B-Rank, Kashio is a capable combatant. Although most teams generally prioritize regrouping during Rank Wars, Kashio's captain, a notoriously prudent strategist, has enough confidence in his abilities to let him act on his own. He was able to hold his own against Minamisawa and eventually defeat him with Kurauchi's assistence. However, despite barely managing to block his sneak attack, he was no match for Yūma, who easily cut off his arm.
As an Attacker who also uses Hound, Kashio can instantly switch between close and mid-quarters combat, and fight effectively even after the loss of an arm. He is also moderately perceptive, realizing Ikoma would attack Karauchi in time to support him and detecting Chika's hop while chasing her, although it turned out to be a trick.
Like the rest of his unit, Kashio is known to be a top-level runner, which allows him to cross the map quickly and pick off the weakest targets first, as well as to find out the hiding spots of Snipers. He is quick enough to dodge a frontal Eaglet shot when he knows the Sniper's position.
An Optional Trigger that renders the user invisible to Radar for as long as it remains active. Kashio uses it to approach weak targets undetected, turning it off before engaging in a fight. He first used it in Chapter 152.
Despite being an Attacker, Kashio can use Hound proficiently. It allows him to fight in mid-range, and makes him dangerous in open areas when he fights alongside his teammates. He is capable of using it to attack an opponent from two different directions at the same time, making defending from it rather difficult, especially at close range. He first used it in Chapter 153.