Hibiki Yūzō (played by Jun Negami) is a protagonist in Warm Current.
Keiko Shima (played by Hitomi Nozoe) appears in Warm Current.
Yasuhiko Shima (played by Eiji Funakoshi) appears in Warm Current.
Sasajima (played by Ryūji Shinagawa) appears in Warm Current.
Shima Mikie (played by Kaoru Shimizutani) appears in Warm Current.
Gin Ishiwata (played by Sachiko Hidari) appears in Warm Current.
Oda (played by Mantarō Ushio) appears in Warm Current.
Shima Takiko (played by Chieko Murata) appears in Warm Current.