Koichi is a femboy who has large curves. He wears a green croptop hoodie and a pair of shorts that show off his curves. He is 5,2 in height and is usually friendly, cheerful, and polite. He has a very gentle heart, although if pressured, he can get very angry and defensive. His hair is white and soft, and his eyes are blue. He enjoys showing off his body. He has a stand ability named Echos that has 3 acts, but usually uses Echoes Act 3. Its ability pushes you down and locks you in place.