Hinako Kuroiwa is the main character from the anime series "Issho ni Training". She is depicted as a lively and enthusiastic young woman who serves as a fitness instructor, guiding viewers through various exercises. Her cheerful and encouraging personality makes her a motivational figure, helping to inspire fitness and wellness. The series is designed to promote healthy living by combining anime storytelling with practical workout routines. Hinako's role is both educational and entertaining, acting as a virtual personal trainer and companion for the audience.