In addition to the tenketsu, the chakra circulatory system houses eight valves responsible for regulating the flow of chakra. The Hachimon or eight gates are located along the spine, the heart and in the ninja's head. It is possible to force the body to open these gates, which allows the ninja to release ten times the usual amount of power. Unfortunately such power comes at a price, as each subsequent gate is opened, the ninja increases the damage to their body and comes closer to death. For this reason gate opening has been deemed Kinjutsu. If all eight gates are opened, the ninja gains power that surpasses the Hokage at the cost of their own life. Also even if the ninja opens fewer gates, if they do not strike a finishing blow against their opponent, they will be severely weakened and very defenseless to a counter attack. It is also unclear whether the ninja has to open all the gates in order, of if they can open a later gate and bypass the previous ones.
In order to advance to each gate you must first go through the previous gate. You also may only advance a maximum of two gates per post. As the gates get higher the stat increases do not accumulate. For example, if you go through gate one then to gate two you will get the strength bonus of 10 total which is the bonus of gate two alone, not both gates accumulated.
Celestial Gate 1:
Strength - 5
Speed - 5
Celestial Gate 2:
Strength - 10
Speed - 10
Agility - 5
Endurance - 5
Celestial Gate 3:
Strength - 10
Speed - 10
Agility - 10
Endurance - 10
Chakra - 5
Celestial Gate 4:
Strength - 15
Speed - 15
Agility - 15
Endurance - 15
Chakra - 10
Celestial Gate 5:
Strength - 18
Speed - 18
Agility - 18
Endurance - 18
Chakra - 18
Celestial Gate 6:
Strength - 20
Speed - 20
Agility - 20
Endurance - 20
Chakra - 20
Celestial Gate 7:
Strength - 25
Speed - 25
Agility - 25
Endurance - 25
Chakra - 25
Celestial Gate 8:
Strength - 55
Speed - 55
Agility - 55
Endurance - 55
Chakra - 55
Celestial Gate 1:
Releases the brains restraints allowing full power usage of the body's muscles. This is opened to prepare the body to use Omote Renge. This gate is located in the head. No downsides.
S rank: Lasts 20 posts
A rank: Lasts 18 posts
B rank: Lasts 15 posts
C rank: Lasts 10 posts
Celestial Gate 2:
Raises stamina and assists in recovery after being weakened. This gate is located in the head. No downsides.
S rank: Lasts 18 posts
A rank: Lasts 16 posts
B rank: Lasts 12 posts
C rank: Lasts 9 posts
Celestial Gate 3:
Body enters Ura Renge phase, turning their body a shade of red. This gate is located along the spine. Lowers all stats by 5 points when the gate runs out.
S rank: Lasts 16 posts
A rank: Lasts 14 posts
B rank: Lasts 11 posts
C rank: Lasts 8 posts
Celestial Gate 4:
Further increases speed and power, usage will begin to tear the body's muscles. This gate is located along the spine. When the gate runs out all stats will be lowered by 7 points.
S rank: Lasts 14 posts
A rank: Lasts 12 posts
B rank: Lasts 10 posts
C rank: Lasts 6 posts
Celestial Gate 5:
Further increases speed and power. This gate is located along the spine. Once the gate runs out all stats will be decreased by 8 points.
S rank: Lasts 13 posts
A rank: Lasts 11 posts
B rank: Lasts 9 posts
C rank: Lasts 5 posts
Celestial Gate 6:
Further increases speed and power, body becomes able to use Asakujaku technique. This gate is located along the spine. When this gate ends all stats will be decreased by 10 points.
S rank: Lasts 12 posts
A rank: Lasts 10 posts
B rank: Lasts 8 posts.
Celestial Gate 7:
Further increases speed and power. This gate is located along the spine. When this gate ends all stats will be decreased by 15 points.
S rank: Lasts 11 posts
A rank: Lasts 9 posts
B rank: Lasts 8 posts
Celestial Gate 8:
Further increases speed and power, body attains unimaginable power at the cost of their own life. This gate is located at the heart. When this gate ends the user will lose their life based on their stamina. If their stamina is above 50 they will be able to survive six posts with all stats reduced to 5 until given medical attention or until 48 hours of real time have passed.
S rank: Lasts 10 posts
A rank: Lasts 8 posts
So, you are probably thinking about how you attain the Eight Celestial gates. Well, of course you must have Taijutsu as a specialty and certain high-level celestial gates require a form of Class that you must be in. Such as the upper levels requireing Taijutsu Master. If you want to be able to even train for the gates look below:
Celestial Gate 1: 600 word Training Topic
Celestial Gate 2: 800 word Training Topic
Celestial Gate 3: 1000 word Training Topic
Celestial Gate 4: 1200 word Training Topic
Celestial Gate 5: 1400 word Training Topic
Celestial Gate 6: 1600 word Training Topic
Celestial Gate 7: 1800 word Training Topic
Celestial Gate 8: 2000 word Training Topic