Karasuji Clan

The are a clan residing in Konohagakure. All members born in the clan possess the Shokukōgan, a kekkei genkai that links the olfactory and visual systems, where a Karasuji member can see smells at their will, and also color code certain scents at the price of chakra. As such, the Karasuji were commonly dispatched in search or tracking missions.

Founding
The Karasuji Clan are believed to be descendants of an unknown Ōtsutsuki member, one who possessed the Shokukōgan. The Karasuji inherited this Ōtsutsuki member's kekkei genkai, granting them the Shokukōgan. The Karasuji also inherited a heightened sense of smell, comparable to dogs.

The Karasuji were renowned and notorious for their use of the Shokukōgan. Many called for the Karasuji in search or tracking missions for missing-nin or for fellow ninja. They were also used as hitmen, searching and assassinating many due to their kekkei genkai.

Warring States Period
Use of the Karasuji's abilities peaked during the Warring States Period. Many were utilized in assassinating key individuals of every country. This also included the children, who haven't honed their kekkei genkai to the fullest. As a result, the success of the assassinations were dwarfed by the foiled attempts, and the clan came close to extinction. Many Karasuji snuck out and hid in secret homes, where they half-restored their clan by the end of the period.

Konohagakure
The Karasuji had little part in early Konohagakure, as they were still in hiding, unknown to them that the war ended. After news of the war's end caught up to them, they returned to their cities, but the majority went towards Konohagakure. There, they made forged a friendship with the Hyūga Clan.

The First Three Shinobi World Wars
Each of the wars simulated the Warring States Period when it came to the Karasuji. Many were used in tracking and assassination, but their use was restricted for adults and not the children. As such, the clan never became as endangered as during the Warring States.

Abilities
The Karasuji possess the, a dōjutsu kekkei genkai. This allowed the Karasuji to link their olfactory and visual systems, so they could see and color code certain smells, allowing them to track others as long as they have color coded their respective scent. This comes at a price of chakra. In addition to this, they also have a heightened sense of smell, comparable to that of dogs.

Leaders

 * Multiple Unknown Leaders