Ketsuryūgan

The, is a dōjutsu, which appears in certain individuals of the Chinoike clan. The users of this dōjutsu are characterised as holders of "eyes as red as blood". Its power earned it the comparison to the Three Great Dōjutsu.

Appearance
The Ketsuryūgan is characterised by the blood-red colour it imparts to the eyes. When activated, the sclera turns bright red and the irises turn a very deep red, almost black. The pupils transform into bright red horizontal lines.

Abilities
The Ketsuryūgan confers genjutsu casting abilities, either by making physical contact with the target or meeting the target's gaze. Once this is done, they can hypnotise the victim in a variety of ways, or even delve deep into their minds to extract information. The Ketsuryūgan also gave the users the ability to manipulate iron, or more accurately, any liquid with a high iron concentration. As such, fitting with its moniker, the Ketsuryūgan can manipulate the blood within a living target, whether it be themselves or another being.

Trivia

 * When written as 血流, ketsuryū means "blood flow".
 * The Ketsuryūgan's description in both appearance and genjutsu might is similar to the Kekkei Genkai of Ranmaru from the Kurosuki Family Removal Mission filler arc. It is unknown whether the two dōjutsu are one and the same. However, the anime's depiction of both dōjutsu gave a clear difference in design between them.

Ketsuryuugan pt-br:Ketsuryūgan Ketsuryugan Ketsuryūgan Ketsuryûgan