The Overphase System is composed of two equal parts that encage the Cybody and the Driver; each part is made of several puzzle-like pieces which when combined take a coffin-like appearence.
Result EditThe result is a fusion of Cybody and Driver creating a being whose appearence resembles a mix of both. This causes the Star Driver to gain better control over his Cybody moving its body like the Driver's own and an immense power-boost that allows it to overpower extremely powerful opponents such as Takuto's upgraded Tauburn.
Despite the system's powerful effects it came with a host of drawbacks. The risk factor for the Driver was above that of Cybody regenaration. Due to the fact that Driver and Cybody are one, if the Cybody is destroyed the Driver is also killed. Likewise the system's greatest fault was that its effects could be easily broken by a Maiden's powers, returning Cybody and Driver to their original forms.