The Serial Skill User Suicide Phenomenon (異能力者連続自殺事件,,Inōryoku-sha Renzoku Jisatsu Jiken?) was a case forwarded to the Armed Detective Agency by the Ministry of Home Affairs to investigate the reason behind the sudden deaths of ability users worldwide and to investigate Tatsuhiko Shibusawa, an ability user calling himself the "Collector", who was suspected of being tied to the incident. It was also referred to as the Dead Apple Incident.
After a strange fog appears at the scene, ability users around the world are suddenly committing suicide one after another. There are 128 confirmed cases of ability users who disappeared and more than 500 who died in the worldwide incident.[1]
