Overview
pixiv Red (pixivレッド, pixiv reddo) is a tag mainly used on pixiv to avoid confusion with the official version of Red, which is a derivative work of Red with excessive derivative versions.
This tag was established mainly after the release of Pokémon HeartGold and SoulSilver, when the number of pictures with derivative versions increased due to its popularity, and the appearance and versions that were not originally official became widespread along with misunderstandings.