[Naruto] Byakugan
 

I started to follow Naruto(both the anime and the manga) and I'm amazed by the high number of interesting characters and powers in that series.
That is a basic attempt to realize the Byakugan of the Hyuga's clan, but I need an hand from Naruto's fans (and from anyone would help, of course).
Let's start:

The Byakugan's users have a nearly 360° field of vision and could see through any substance in a 50-meter radius.
I managed this as a 360° Vision(Panoptic I) + Penetrating Vision 10.
However, I thought about it also as Scanning Sense for the 50-meters radius.

As I said, those who uses Byakugan has a "nearly" 360° arc of vision. In fact there is a small blind spot just near the back of the neck(the first thoracic vertebrae, to be exact). That spot could be hitted by small ranged attack or object(an arrow or a kunai for example) with a very precise strike(Maybe a -9 hit location could work).
This is a Limitation but I have a doubt about its value. -5% sounds good to me.

The last and best ability of Byakugan is to "see" che Chakra coil system inside a person. With precise strikes a Byakugan user could hit individual chakra points of a target and shut down the flow. A enemy crippled in that way can't use techniques that require chakra to activate. Also, such strikes damages the body of the target and his internal organs(up to heart-attack). The ability to see the chakra flux also help the user to reconize real foes than illusions(who doesn't have a chakra coil system).
I see that as Detect(Chakra), Linked to Penetrating Vision and 360° Vision.
Pressure Points and Pressure Secret skills are used for shutting down the flow or tho damage the enemy in that ways.

Last, I add a 1 point/fatigue cost for each minute of Byakugan use.

Here is:

Byakugan: 360° Vision(Cost Fatigue 1, -5%; Link, +10%; Panoptic 1, +20%)+Penetrating Vision 10(Cost Fatigue 1, -5%; Link, +10%)+Detect:Chakra(Cost Fatigue 1, -5%; Link, +10%;) [148]

Suggestions or adds, anyone?

Re: [Naruto] Byakugan
 

IIRC, they can use it to 'zoom' in on a point. You should add telescopic vision as well.

Re: [Naruto] Byakugan
 

First, by default Penetrating Vision and 360° Vision are always on, so they don't need link. Adding Costs Fatigue would actually change that, however it makes the ability more expensive (Costs Fatigue -5%; Link +10%) so personally as a GM I would not require Link.

Maximum Range: You also mentioned that this ability should only work for a 50 meter radius, for this I suggest a -10% Limitation (Using the Range Penalty Table from B550 and the rule for Range Limitation from Warp.

I don't think such a small spot is worth anything more than -0%. -5% means that roughly 10% of the attacks would hit that location by chance (See accessibility Limitation Powers pg. 99).

You probabely need a Chakra Limitation too... ;)

What avantage exactly does detect (chakra) bring? Does it reveal the powers of the enemy? Then I would rather Name it Detect (Powers). If the primary effect of this chakra detection the ability to neutralize is I suggest using:
Neutralize (Chakra Power; Requires Melee Attack; Inaccurate to represent the Hit Location Penalty)

Re: [Naruto] Byakugan
 

Firstly, the "50 meter radius" isn't a hard cap. That's only Neji's personal limit at that point in the story. It is entirely possible for him and other members of the clan to improve that with practice.

Second, the advantage absolutely needs to have Telescoping Vision, which accounts for their unusually long range of detailed sight. Combining Telescoping Vision and 360 degree vision is something that someone will have to rule on individually as a GM as to whether it's a universal zoom, a selective zoom, or simply a focus on a particular arc of vision, leaving the two incompatible to use at the same time. If the latter is the case, Alternate Abilities works to model it.

I have to echo sentiments that these abilities don't require a Link. The abilities in GURPS are on by default, and while this isn't the case in the clan, there's no particular reason why they couldn't use only one at a time, and there's no rules reason for why they can't be used at the SAME time. If it makes you feel better, go ahead and slap it on, but I wouldn't bother.

Regarding the Byakugan blind spot, this is FAR too small to be a meaningful limitation. An object would have to be no bigger than a bluebird to be concealed in the blind spot, and that's only if it happens to be in exactly the right position, which can ghange by the user sivelling his head slightly in any direction. It's a -1 point quirk of the power at best.

On a quick side note, you ought to slap on "Vision-based" to Detect (Chakra). They see the chakra, it's not truly a seperate sense. If they're blinded, they can't see chakra anymore. Worth noting.

Also, there is absolutely no reason for Byakugan to have a fatigue cost. There is no instance of the users of the ability tiring because of their use of it. Junk that limitation, and if you *REALLY* want to give them a reason for not using it, there are rules in Powers for abilities and exertion. In summary, people that use powers in battle suffer an extra FP of exertion at the end of a combat. That should really be sufficient.

Lastly, you might consider adding a nuisance effect to these abilities. -1 to -3 in reaction penalties for anyone who can see their face when they use the ability (you CAN'T tell me someone can still look beautiful when they have the psycho eyes and crazy veins popping up all around their face going on. Yikes).

All in all, I'd say it's not a bad model. I wouldn't use Scanning Sense, as it doesn't really cover what all Byakugan can do. In this case, detail is better.

Der Wanderer, chakra in Naruto is essentially a mix between life energy and spiritual energy. It's the root of all ninjitsu techniques, and it flows along its own specific circulatory system. All living creatures have chakra, whether they know how to use it or not, so essentially, Detect (Chakra) is the same thing as Detect (Life) in a sense. It allows the user to discern when a target is real and when it's an illusion (VERY useful in a world full of ninjas with mystical powers. Illusions are relatively common), and also the relative energy level of a given target by measuring the intensity of their chakra flow. It also allows them to see when a target is molding their chakra to a specific purpose, for example, to see if a target is concentrating their chakra into their lungs to prepare for a fire breathing technique, or into their hand to unleash a powerful melee attack, and so on. It's not really related specifically to neutralization or power use, but is a bit broader than that. Detect (Chakra) is easily the best way to go about modelling the ability.

Re: [Naruto] Byakugan
 

I'm actually running a Naruto campaign, and one of the characters is a Byakugan user. Here's How we've modeled it:
First, there's a Byakugan power and Power Talent. It costs 5 points per level, and uses the new power source Chakra. Chakra is worth a -10% reduction, because all chakra powers cost at least one fatigue (-5%), and supernatural abilities and skills can neutralize them (-5%).
The Byakugan power includes the abilities 360 degree Vision (with Panoptic 1), Dark Vision (with Color Vision), Detect: Chakra (Occasional) (with Precise and Analytic), Enhanced Parry, Enhanced Time Sense, Extra Attack (with Multistrike), Extra Basic Speed, Hyperspectral Vision, Innate Attack: Fatigue Attack (with a new, 0% modifier: Can Effect Energy Reserve), Microscopic Vision, Night Vision, Penetrating Vision (with Blockable: Chakra blocking materials (a specific material), Scanning Sense: Para Radar (with Extended Arc: 360 degrees and No Intercept), See Invisible, and Telescopic Vision.

Several of these powers (Enhanced Time Sense, Enhanced Parry, Extra Attack, etc) would have a -20% Accessiblity "Only while using Byakugan".
Currently, the Byakugan user has got Enhanced Parry, Juuken (which is the Fatigue attack with Affects Energy Reserve, above), Para-Radar (with Penetrating, Bio-scan, Targeting, and the X10 version of Increased Range.

Incidently: when you're modeling a set abilities that are normally always on (360 vision, Enhanced Time Sense, Enhanced Parry, etc) and you want to make them switchable as a package, you only have to make one of the abilities switchable (Costs Fatigue makes it switcable, for example). Then, put Accessibility modifiers on the rest of the always on abilities so that they're only on when the first ability is on (I suggest -20% as the Accessiblity for any ability that's only on when using another ability that costs fatigue). Link is only nessecary when all the abilities involved are switchable by default.

Re: [Naruto] Byakugan
 

As they explained it on the show, "Chakra" is a dedicated energy pool for fueling the ninja powers. The Byakugan would definitely consume it.

Re: [Naruto] Byakugan
 

I just modeled Chakra as an Energy Reserve. It's worked quite well so far. Most genjutsu (illusion) and ninjutsu (general) powers have "can only be powered by Energy Reserve", but taijutsu (physical combat) usually doesn't have it.

Re: [Naruto] Byakugan
 

What would the effect of this blind spot be? You mention that this small spot could be hit, but what would that mean? If it's just a tiny blind spot, I'd say it's probably easily modelled by the standard penalty to defend against rear attacks with 360° Vision.

Sounds to me like this ability is primarily an excuse for access to these two Skills at great levels.

Re: [Naruto] Byakugan
 

Actually, people with 360° have no penalty to defend against attacks to the rear - just a penalty to attack. In any case, in my campaign, I decided that since it was such a miniscule spot that it was effectively a special effect, not worth a limitation on the ability.

Re: [Naruto] Byakugan
 

Thank you, thank you, thank you! I just got GURPS--partly inspired by reading this thread and others like it--and, based on this thread, tried statting up Byakugan. Here's what I came up with, using Characters and Powers:

Byakugan. 240 points.

• 360° Vision (1° solid-angle blind spot above third thoracic vertebra, -1%; Chakra-Based, -5%; Costs Fatigue, 1 FP, -5%; Panoptic 1, +20%; Visible (face), -5%). 26 points.
• Acute Vision 8 (Only while using 360° Vision, -10%; Chakra-Based, -5%). 14 points.
• Colorblindness (Only while using 360° Vision, -10%; Chakra-Based, -5%). -8 points.
• Dark Vision (Only while using 360° Vision, -10%; Chakra-Based, -5%). 22 points.
• Detect Chakra (Only while using 360° Vision, -10%; Analyzing, +100%; Chakra-Based, -5%; Precise, +100%; Vision-Based, -20%). 80 points.
• Penetrating Vision 10 (Only while using 360° Vision, -10%; Blockable, chakra-blocking materials, -10%; Chakra-Based, -5%). 75 points.
• See Invisible (Only while using 360° Vision, -10%; Chakra-Based; Chakra-Based, -5%; True Sight, +50%). 21 points.
• Telescopic Vision 8 (Only while using 360° Vision, -10%; Chakra-Based, -5%; No Targeting, -60%;). 10 points.

"Costs Fatigue, 1 FP, -5%" is only on one advantage because, if it were on all seven advantages, activating Byakugan would cost 7 FP! (At least, that's how I see it.) (By the way, using the Byakugan definitely costs FP--in the filler arc where the old man plants bombs around the village, Hinata gets tired from extended Byakugan use. Also, the Sharingan uses chakra, as shown when Sasuke and Itachi are repeatedly forced to drop their Sharingan when low on chakra, and when Kakashi suffers from chakra exhaustion after his first fight with Zabuza in the Land of Waves; it seems like the Byakugan should have similar effects.) Anyway, each advantage ends up at -10%, whether from "Costs Fatigue" and "Visible" or from...
"Accessibility, only while using 360° Vision, -10%": One of the examples on B110 is "Only in altered bodyform (Invisible, Insubstantial, etc.): -10%"--i.e., "Only while using Invisibility, Insubstantiality, etc." This fits perfectly.
"Chakra-Based, -5%": There are countermeasures to chakra-based techniques--"Dispel," the Hyuuga's Gentle Fist, Ranmaru's (filler) ability, Jiraiya's and Orochimaru's chakra-suppression tags and seals, Tsunade's poisons...
"Visible, -5%": Use of the Byakugan (the bulging veins around the eyes) is only visible from the front.
"Acute Vision 8": During the Bikouchuu beetle filler arc, Hinata has difficulty making out insects, which have something like SM -10.
"Colorblindness": The anime depicts Byakugan vision in black and white. (Seeing blue/yellow/red chakra is from Detect Chakra and its enhancements.)
"Detect Chakra": Chakra isn't "occasional," it's in all living things! It should definitely cost thirty points.
"Penetrating Vision 10": This is rather arbitrary; but, at the very least, Neji could see into the Akatsuki's cave in the Rescue Gaara arc.
"Telescopic Vision 8": This is based on Neji's range during his fight with Kidoumaru (the spider guy from Orochimaru's Sound Village) in the Rescue Sasuke arc, as stated on Narutopedia.
"No Targeting, -60%": This is debatable, as we never really see Byakugan users throwing kunai or shuriken.

Dark Vision, Color Vision isn't applicable--see "Colorblindness" above.
I don't think that the Byakugan is quite as powerful as Hyperspectral Vision--it certainly doesn't include Infravision.
Enhanced Parry, Extra Attack, Extra Basic Speed, and Innate Attack are parts of Gentle Fist, not Byakugan.
Enhanced Time Sense is debatable--it sounds more like Sharingan than Byakugan to me, though.
Microscopic Vision isn't applicable--see "Acute Vision 8" above.
Scanning Sense, Para-Radar, and Bio-Scan seem kind of superfluous--all that stuff can be inferred from Detect Chakra, Analyzing, since chakra is life energy. Also, Bio-Scan includes "biochemical information," which the Byakugan definitely can't pick up.

In my eyes, chakra is equivalent to FP, and doesn't need a separate reservoir--when Neji closes Naruto's tenketsu with Eight Trigrams Sixty-Four Palms in the Chuunin Exam finals, Naruto is unable to move or use any attacks, just as if he were out of FP. (I don't have Campaigns yet, so this might be wrong.)

(Yes, I know this thread hasn't been updated in five years--but the Byakugan is cool!)