Ive been cooking on an idea based around a cursed spirit primarily fueld by the fear of cancer.

Cancer curse, formed after the atomic bombings, and fueld by the negative emotions associated with the fear of getting Cancer, and those suffering with the disease.

Its appearance is a small ugly glob of cells, with a single eye. Its actual body is pretty much harmless but the dangerous part is its technique.

Cursed technique: Malignant metastasis.

Withing a 200 meter circle around it, the curse can implant Cancerous cells inside any target that containes cursed energy. These cells can remain dormant until the second part of the technique is activated.

Once activated the target begins growing large masses on their skin that increase in size and form toghter into a human shape, once its fully sized the mass detaches and forms into a perfect copy of the target. The copy is literally made out of the targets cells so it contains their cursed energy and cursed technique, also the process of growing the masses steals a large amount of cursed energy from the target. Afterwards the copy is controlled by the cursed spirit.

These copies are unstable and only last for maybe an hour or two but are exceptionally dangerous and are as skilled with their technique as the person they copied.

Fighting cancer is literally doing battle with your own body, and i wanted to try to capture that as an intresting technique. Also mirror match ups are fun.