Prologue (OverTone)

Prologue is the first (second overall) mini album of OverTone. It.

The song "Heikousen Romance" was released digitally beforehand on May 11.

Tracklist

 * 1) Monster (モンスター)
 * 2) Zero (ゼロ)
 * 3) Heikousen Romance (平行線ロマンス Romance on the Parallel Lines)
 * 4) Orenji-iro (オレンジ色 Orange)
 * 5) Kamisama no Roulette (神様のルーレット God's Roulette)
 * 6) Lady First (レディーファースト)