(Dōjutsu: Ashi Numachi) – Eye Technique: Reed Marsh
Type: Offensive, Supplementary
Rank: A
Range: Short – Mid
Chakra: 30
Damage: N/A
Description: Reed Marsh is the Shinkaigan’s basic temporal ability, used by the left eye, and is able to perceive and manipulate the lifecycle of what its gaze is set upon. The technique at a basic level invokes the Shinkaigan’s special precognitive ability; more specifically, this means that the user becomes able to predict the future of what the technique itself is targeting. In this sense, lifecycle is broadly defined as anything in existence. Through this technique, or its derivatives, the user is able to gazes at a rock and see it weathered into dust. The user is also able to gaze at a fireball and see its lifecycle, including forming inside the stomach of their opponent, its target, and the resulting explosion. Given that Reed Marsh is the most basic technique within the Shinkaigan’s temporal arsenal it is only able to be used against other techniques and inanimate targets. The essence of the technique is derived from the idea that all things originate from the Void, and that the Shinkaigan can return them to the Void. Through direct eye contact the user can cause a technique up to S-Rank chakra (40) to revert back to the Void. Visually this appears as if the technique is enveloped in a purple energy, consuming it before reducing it to nothingness. Experiencing Reed Marsh directly, meaning sensing it through either one of the primary senses, or through an extrasensory means, causes one to suffer from a 7 Sanity reduction. Reed Marsh can be used four times per battle, with a two turn cooldown between usage.
(Dōjutsu: Ensui Umi) – Eye Technique: Saltwater Sea
Type: Offensive, Defensive, Supplementary
Rank: C
Range: Short – Long
Chakra: 15 (-10 per turn)
Damage: N/A
Description: Saltwater Sea, named after Tiamat, is a basic temporal ability of the Shinkaigan. The technique broadly allows the user to view the lifecycle of what they are gazing upon, specifically that of their opponent and any modes or states activated and sustained by them. While this does not confer upon the user the ability to manipulate the duration of those techniques, though it exists in advanced applications, it does allow them to visually understand the duration of any active mode present on their target. This technique is activated instantly, costing a move but not occupying a slot in the timeframe, and lasts for four turns. It can be activated three times per battle.
(Dōjutsu: Tansui Umi) – Eye Technique: Freshwater Sea
Type: Offensive, Defensive, Supplementary
Rank: A
Range: Short – Long
Chakra: 30
Damage: N/A
Description: The Freshwater Sea, named after Abzu, is an advanced temporal ability of the Shinkaigan related to the Saltwater Sea; this technique allows the user to reverse the lifecycle of any active state sustained by the target as long as they are in direct line of sight with the user. Naturally this technique requires that Saltwater Sea be activated in conjunction with it. Once active the user can reduce the duration of any state they have in their line of sight by two turns; this can only occur once on each mode they witness. The user, as well as those who experience or witness Freshwater Sea, suffer from a reduction of 7 Sanity. This technique can be used four times per battle but only once per state.
These three all go hand in hand so lets discuss them.