Alright, so boom! We'll start with a few body seals to bolster your bio, that way you don't have to keep reposting at start of a battle. We'll get to the rest in a bit, but let me know what you think of these and if you have any questions. If you have interest in a Nara CW lmk and we can do that next.
(Kage Fūinjutsu: Tarutarosu) - Shadow Sealing Arts: Tartarus
Type: Supplementary
Rank: B
Range: Short - Long
Chakra: 20 (+10)
Damage: N/A
Description: Created by those who heavily use their shadow in combat, Tatarus is a technique that serves the process of supplementing one's usage of scroll, object, and tag based techniques through the utilization of one's shadow. By tagging the user's shadow with the kanji of Tartarus (タルタロス), it becomes possible to utilize the user's shadow as the medium/vessel of techniques that employ their usage, enabling a more unique approach to their usage that eliminates the need of scroll/tags/objects. Two approaches exist for Tartarus depending on the nature of the original technique.
For techniques that are inherently offensive/defensive in nature and deal with the release/unsealing of objects from them, such as the Manipulated Tools/Ink Release set of techniques, they become usable through the user's shadow with an additional cost of ten chakra, subverting the need to carry multiple scrolls or tags. This usage would be passive after the placement of the seal, only costing five additional chakra to the utilize the desired technique, with the user being restricted to two pre-mentioned techniques per usage of Tartarus and said techniques themselves naturally taking a move slot when used. While applicable to techniques such as Fire Release: Exploding Dragon Strike, usage on techniques that are naturally harmful to shadows through light would logically result in the removal of the seal, canceling further use of the technique.
As for techniques that don't release and rather uses objects to seal or restrict, such as the case with elemental sealing method or sealing tag, these would constitute an active usage of Tatarus wherein the user would manipulate his shadow to form a replica of the scroll/tag and utilize it through his shadow, costing ten additional chakra to the technique, with the user being restricted to two techniques replicated per usage. While Tartarus serves as an independent technique after it's kanji is placed, the user can also utilize it's effects in the same timeframe of performing other shadow manipulation techniques, costing ten chakra to the cost of the shadow technique, in addition to ten to the technique being replicated.
Usable thrice and must be separated by two turn intervals. Scroll/Kanji techniques that deal with releasing objects/techniques must be mentioned in bio, first post, or upon using the technique the first time in battle(if the user has the original scroll/tags/objects). This can only be used with techniques that require sealing tags, scrolls, and physical objects(kunais, swords etc), with the user's shadow becoming the replacement. If the users shadows are completely destroyed or momentarily extinguished (high level lights), the pre-stored techniques would be destroyed as well. Notably, for Fūinjutsu techniques, they can only be chained with B rank or lower Nara clan techniques, or alternatively only B rank or lower Fūinjutsu can be applied for higher ranked Nara technique usages.
(Kage Fūinjutsu: Hikarinonakani) - Shadow Sealing Arts: Into the Light
Type: Supplementary
Rank: A
Range: Short - Long
Chakra: 30 (-10)
Damage: N/A (Dependent)
Description: Into the Light is a sealing technique that builds on the concepts of Hiding in Shadow & Shadow Killer, a technique that allows the user to enter shadows, and a technique that allows the user to store equipment in their shadows, respectively. By adding a unique seal, Store (格納), to the user's shadow, these abilities are bolstered, allowing the user to store/rerelease techniques into/from the shadow in a similar fashion.
Techniques that would be stored in the shadow must be of equivalent size or smaller than the shadow itself, and it must be a physical technique. Techniques 1-2X larger than the shadow get reduced by 20 points, and techs 2-3X larger get reduced by 10 points, due to the partial 'absorption' of force/momentum. The portion of the opposing technique's initial contact with the shadow is what determines it's size, and length is generally insignificant. For techniques that are wider in one portion that the other, they would follow the previously stated deduction aspect. Into the Light can be applied in the same t/f of another shadow technique, and each shadow this is applied to can only absorb up to two opposing techniques, without having them destroy eachother in the shadow. Techniques within the shadow can not be manipulated or sensed by opponents, and they would be in a form of stasis that preserves them as they were absorbed. If the shadow used for storage was destroyed (or the shadow technique expires/ends), the techniques would be released back, with the user having a mental control on the release's direction. In cases where the user is incapable of making such a decision for one reason or another, it would always be angled away from the user towards the nearest foreign chakra source.
It should be noted that when techniques are released, that the opponents can control them if possible (Depends on the technique the used), although for most cases, such as projectiles and similar, they lose the ability to do so. The user can apply this to his shadow beforehand, allowing the next shadow technique to carry the aforementioned abilities. (Must be posted in first post or in bio) Into the Light can be used thrice per battle with a two turn cooldown in between usages, costing an additional ten chakra points to maintain per turn, otherwise the techniques stored would be released.
Yes it can replicate techniques that require objects as long as it fall in line with the other restrictions.
Until used.
It is dependent on the sealing technique you're using it with.
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What do you mean by multi-traget? The scaling depends on the width of the jutsu essentially, so if it's smaller than the shadow, it can be stored in it. The length is insignificant. An easy way to visualise it is treating the shadow like a portal that can take in anything smaller, but for wider stuff it follows the mentioned restrictions.
There is none, but should the shadow technique be destroyed or you stop paying the chakra cost, the jutsus would be unsealed.
Technique release rules? If you're asking if it can be used on other people's jutsus, then yes it can.
If with a single usage your shadow technique creates multiple shadow entities, then yes, but they would still be restricted to two jutsus between them. If you're reusing the ItL then yeah you can store 2 in each of the shadow techniques you have in play.