Keisuke's next opponent in Kanagawa's Four Lines of Defense is the leader of Team Spiral, Ryuji "Zero" Ikeda. Ikeda believes in his "Zero Theory", where the driver thinks of nothing except being one with the car to create the ultimate racer. Quite similar to Ryosuke's Fastest Racer Theory, Ryosuke also notices a few flaws in Ikeda's theory. A flaw that would arise as the wet conditions create a fog battle.
| Title | Zero Hearts |
|---|---|
| Genres | Animation Action & Adventure Drama |
| Release Date | 2013-02-08 |
| Episode Runtime | 00 Hours 25 Minutes |
| Season Number | 4 |
| Episode Number | 7 |
| Production Companies | OB Planning, Fuji Television Network, Gallop, Studio Comet, Pastel, ACGT, SynergySP, Avex Entertainment |
