Sekiro: Shadows Die Twice Wiki
A carp that lived in the Mibu Village Pond.

It has two red eyes.
Carp with only eyes that are red cannot become “masters”.
Though they’re considered incomplete creatures that lack the ideal number of scales, their eyes are said to be everlasting.
The researcher Dojun in the Abandoned Dungeon wants these eyes to improve his “procedure”.

Red Carp Eyes.png

Required by Doujun as prescribed in the Surgeon's Stained Letter

Awarded for killing the Red-Eyed Carp in the lake near in Mibu Village.