Devil or Nish is Seven's long-lost twin brother.
He's a member of KAIROS who has a major role within the organization. He is deeply involved in the mission of the retrieval of PHASe database. He is a skilled hacker which Three described as "brilliant". He was the one who suggested that someone should infiltrate PHASe HQ to take the data needed.
Being twins they used to be very close. However, their relationship has been deteriorated resulting in them not seeing each other for years. Despite that, Devil appears to have followed and watch over his sister. He was the one who asked KAIROS members to observe Seven in order to retrieve her data and class.
- On the night poster of Seven, the ARO glasses are analyzing Devil with a 50% chance of winning.