With a simple touch to the iMood chip implanted on the back of one's neck, emotional regulation has never been easier. Despite the appearance of societal harmony, the risk of emotional instability still looms twenty years after its creation. In the midst of it all, Yu Qing Le, a cop hopelessly dependent on the iMood chip, finds himself caught up in a string of violent killings, starting with a victim found hanging from the ceiling. Original comic: Official English translations: , ,