SCP-835-JP, known as "Keteru Yamiko," appears as a teenage girl with variable age and appearance, often in black school uniforms. She has teleportation abilities between dark areas, wields a large knife, and can manipulate darkness to make objects disappear. Victims encountered by SCP-835-JP vanish without a trace, leaving behind significant blood evidence. Details about her attacks remain elusive despite surveillance efforts and witness testimonies. She is now contained in a high security cell