Oni Bloodline

Name: Oni
Possessors: Global
Type: Physical Enhancement
Location: This bloodline is not location-specific, appearing in any who fit the requirements.
Appearance: As its namesake would imply, the Oni bloodline makes one look akin to a demon, with horns, unnatural skin and eye colour, and other miscellaneous traits such as sharpened canines. Musculature can vary wildly, with some looking like hulking brutes while others look fairly normal.
Abilities:
Oni are the descendants of individuals who experimented heavily with forbidden jutsus and communed with evil, false gods. Their children can be born changed, warped. Though this does not affect their mind, it does affect their body.

Demonic Constitution: Regardless of outward appearance, all oni have incredibly dense musculature and bone, making them both stronger and more durable than normal individuals. Their bone structure has taken on some changes to shield usual weak spots in the body. The liver is now properly shielded by the ribcage and their small bones are less prone to breaking, making it harder to exploit small joint manipulation, such as twisting a finger or stomping on a toe. Their temples are better protected as well. This also has the side effect of making them quite a bit heavier than normal.

Hellish Aura: The Oni posses a unique chakra nature, which allows them to give off an ominous or foreboding sensation, often instilling fear or dread in others. Their chakra can take on different colours or hues and can vary from Oni to Oni. In addition to their chakra nature change, the chakra is also able to invoke fear or dread in those around the user. When the Oni exerts chakra in any way, being the casting of a jutsu or the use of an ability, they can choose to give off an aura around them. This aura will make those around them afraid, or at least unsettled by the user.

Weakness:
Though they bear great durability, having such a body has its disadvantages. As a lot of the fat in their body is replaced with muscle, they make for poor swimmers, struggling to so much as stay afloat in relatively calm waters. Thus, they are quite susceptible to drowning. The lack of fat also means they're very sensitive to cold and must find more substantial ways of keeping warm; this also means that enemy shinobi can take advantage of this. Because of this they lose 2 MPP of movement and can hold their breath for one post less while in water.

Owners:
- Amano Kanon
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Jutsu List:
- Horrific Scream [D-Rank]
- Infernal Sphere [D-Rank]
- Predatory Sense [D/C/B/A/S-Rank]
- Infernal Swing [C-Rank]
- Bloody Raid [C-Rank]

Hellish Aura: Apart from granting them increased chakra reserves, their chakra has a distinct nature to it, making their Killing Intent have a far greater effect than normal, able to shake even the steeliest of hearts.

So we no longer allow chakra reserve increases, and the killing intent aspect can just be added into the primary ability, so you can remove this whole bit if you would like.

If you combine the two abilities into one primary ability, you technically do not need a weakness. If you would like to keep the swimming thing for flavor, that is entirely up to you, however you could get this approved without it.

The chakra color and appearance, since is mostly flavor, can also fall into the first ability.