Emi Kirishima is the Hatsudai shelter's resident mechanic and member of the Devil Busters. Although she's often teased by her fellow DBs, Emi's prowess with technology and her spirited nature make her an invaluable and reliable partner. She reluctantly announces both her and Tatsuya Hayasaka's temporary resignation after learning of Tatsuya's death, leaving Ayato Katsuragi as per an agreement with Doctor Kusaka. Later on, her pet, Newton, becomes a playable character.