Kirishima Cosplay | Top 5 Kirishima Costumes In 2022 Kirishima Cosplay Costumes Ready to cosplay avengers costumes adults Kirishima? Kirishima Eijiro Boku no My Hero Academia Season 4 Cosplay Costume. Give your costume that extra edge of realism with Flexi Ears! See the video below for more. This version sports a more hoodie-like design with one full sleeve on the right arm and the gauntlet and armband design on the left.