Digimon Chronicle X

Digimon Chronicle X (デジモンクロニクルエックス) is a storyline created to promote the 2019 Digital Monster X and Digital Monster X Ver.2, and the 2020 Digital Monster X Ver.3 featuring X-Antibody Digimon. The first four chapters were provided on the v-pet site, and were also compiled and expanded upon in the booklet packaged with the Digital Monster X. The rest of the chapters were also uploaded online.

Plot
The story is a follow up to the original Digimon Chronicle.

Ten years after activating the X-Program, killing 98% of existing Digimon and creating a new Digital World, sends some of the  to the old Digital World to check on how it is faring. To aid their journey, they are given the X-Antibody, transforming them into, , and.

The Dark Area, created by, was unaffected by the X-Program due to being on a separate layer to the Digital World, with the being unaffected due to this.

GranDracmon kills Digimon in the old Digital World, forces them to undergo Death-X Evolution, and then sends them to the Dark Area. Taking advantage of this, sends thousands of sealed away Digimon to break through the barrier and escape, successfully doing so after she undergoes X-Evolution and defeats. 's plan is to use this to its advantage, so that it can use the X-Antibody and the other members of the Demon Lords to kill the Royal Knights, then destroy every Digital World in existence.