Unattractive and ordinary Kagami (Yaotome Hikaru) gets furious when his friend Saionji starts seeing his love interest Yuri. In order to break them up, he creates the bugging device “Saionji Crasher” and plants it in Saonji’s room.

ダークシステム 恋の王座決定戦 (Dark System: Koi No Ōzakettei-sen) / Dark System: Koi No Ohza Ketteisen