Kagune have their own separate hit points. Their AC is your AC - 2.

If your Kagune reaches 0 hit points, it retracts into your body until they return to at least 1 hit point. Anytime you regain hit points, you can choose to have your Kagune regain them instead. If you regain hit points by using your RC Cells, and you choose them to go to your Kagune, your Kagune regains double the amount of hit points it would restore. Your Kagune regains all hit points at the end of a long rest. Your Kagune gain any resistances or immunities you have and are immune to psychic damage.

As a Ghoul, your diet is comprised of three things, Humanoids, Coffee, and water. Ghouls require 1 Medium sized humanoid per 1d12 + your Constitution modifier days, otherwise, they will attack the nearest humanoid and attempt to kill and eat them on sight. Ghouls usually wear a mask when hunting in order to keep their identity a secret. When your Kagune is out or you're eating or hungry, Your sclera(White part of the eye) turns black and your iris turns blood red. If you fail to meet your hunger requirements, you lose the ability to use your Kagune until you eat, and for every day you starve you gain a level of exhaustion. If you consume food beyond your ghoul diet, you must succeed a DC 18 Constitution saving throw or vomit, and regardless of the outcome it does not count toward your food requirement.

RC Cells are the fuel for Kagune. You have a maximum number of RC Cells equal to the number listed in the RC Cells Column + your Constitution modifier. You regain all RC Cells during a short rest. Eating a small amount a human flesh lets you add your proficiency modifier to your current RC Cells, and eating an entire humanoid gives you double your proficiency bonus. If the creature you eat is considered Large or greater, you add your proficiency bonus again for each size difference.

At 2nd level, ghouls have a natural ability to regenerate. As a bonus action, you can spend 1 RC Cell to regain a number of hit points equal to the amount listed per Kagune below + your Constitution modifier. Spending 2 RC Cells lets you double your Constitution modifier when healing yourself.

At 2nd level, while you have at least 1 RC Cell, your AC increases to 10 +constitution.

At 5th level, you can choose to regain missing or damaged limbs or body parts during a short or long rest for 3 hit dice. These hit dice are not regained if they are spent during a long rest

At 10th level, when you take the search action, you detect the location of any living or dead Humanoids within 10 mi. of you that produce a smell.

At 11th level, due to the power of your mutated RC Cells, you are considered to have the Powerful Build feature and are counted as one size larger when determining you ability to carry, push, pull or lift objects.

At 13th level, you spend time looking into how to keep your identity a secret. When you summon your Kagune, you can instead use a reaction to dismiss your Kagune. You gain proficiency in the deception skill, and if you already have proficiency, you gain expertise in this skill. In addition, when you talk to a creature to one minute or more, you can make a deception check versus their insight. On a successful roll, the target treats you as a trusted ally.

You learn Common and 2 rare languages and 2 common languages