She and her sister father is a veterinary doctor and they help their father in the clinic. She and her sister appeared in episode 4.
Koi Chigusa is Voiced by Natsuko Kuwaya.
Appearance
Koi has a braid and round glasses.
Personality
Role in Plot
Nozumu Futami meet them when he takes Billy to the vet clinic after he ate a fax addressed from the Sumireko Ichijō and Kaoruko Ichijō to Nozomu which got it stuck in his throat.
Relationships
Nozumu Futami
Ai Momoi
Kaoruko Ichijō
Kira Sakurazuki
Mai Momoi
Juntarou Gonda
Miyabi Hinagiku
Mrs Futami
Mrs Ichijō
Mrs Sakurazuki
Rara Hinagiku
Ruru Hinagiku
Sara Shirogane
Sumireko Ichijō
Sōju Shirogane
Ui Chigusa
Yura Sakurazuki
Billy
Ichijō Sisters Fan Club
Keisuke Kosaka
Kenmochi
Mr Chigusa
Mr Futami
Mr Ichijō
Mr Sakurazuki
Yūya Hiyama
Trivia
- She and her sister are in third year in high school.