Portal Efficiency Routes Technology / Science in Liminal Chronicles | World Anvil

Portal Efficiency Routes

SPOILERS WARNING: Liminal Chronicles Series: TITLE TBD (Book 3)
You're afraid of math? Look, you can save one third of your ki energy and this app will do the calculations for you. I know you don't trust tech. But I can't help you if you refuse to use a cell phone!

You'd use paper Ofuda? Fine. I can look into transferring the solution to paper. But I'm not handwriting them all, you understand. Especially the ones with multiple routes!
— the unidentified inventor

  What happens when a young mage changes the magic world by using math and science to improve instant travel spells? You get portal efficiency routes measured in units of energy. The calculation method is spreading quickly into other areas of magic use, though adoption of the method isn't as rapid.



The Yokai have unusual methods for every aspect of life. Until the current generation, they haven't been interested in technology. Magic always got them by. One simply had to have the required energy for the next spell or two.     The inventor tinkered with measuring a mage's energy. Once that was established (and the uproar began about privacy issues), the next step was to quantify units of ki that could be used for calculations. Under the guidance of the mage science department at Kyoto Jidai Arcane University, the inventor then created an app to help mages understand the quantity needed.


How to Obtain the Calculations

by user4468087 + Freepik
  • Connect to the app
  • User allows the app to scan their ki levels: amount on hand and overall capacity
  • App withdraws and returns the amount of ki for 1 unit so they understand how much a unit is
  • User marks the location on the map, and notes the diameter opening and duration of the portal needed
  • The app calculates the energy needed to the nearest half unit + a 5% margin of error
  • User creates portal with that amount of energy (It can take some time for a user to get this correct.)
  • The app tells the user if they used the correct amount of energy


    by AWV + user4468087

    by AWV, j.pranee, MidJourney



    Will you join:
    Team Umeji Team Nakamura Team Soujoubou (Book 2) Team Freezone (Book 3)
    or all teams?

    When you choose the team with the secret(s) - the secrets(s) will appear. Secrets may not be available for every team on an article.
    Be prepared for spoilers

    In order to access the team secrets, you will need to be logged in to your World Anvil Account.
    Related spell(s)
    by Pixel Perfect
    Identity not released. Though Kyoto Jidai Arcane University via Kyoto Jidai Archane Corporation has patented the method through the Yokai Courts. The inventor's name will be released after the agreed upon date.
    Ki Joule (KIJ) = amount of ki that equals the force of one Newton acting through one meter1

    Upgrades to the App

    Smaller portals are always easier to create. The amount of energy needed increases exponentially for long distances. For the best use of ki, sometimes multiple portals are suggested to common portaling locations, kind of like airline or shipping service hubs. The series of portals is calculated to be the least expensive in terms of ki. Keep in mind the calculations for this are more complex and there is a subscription service for these routes.

    Future Releases

    Kyoto Jidai Archane Corporation has announced upcoming options, including:
  • Withdrawal of the exact amount of energy needed from the user + 5% margin of error (this is a voluntary withdrawl, not ki theft)
  • A device to store the energy and release it with a keyword for the portal spell


    Social Impact

    Concerns raised include:
  • What if the app or device gets hacked? A user could be killed by the withdrawal or lost in the void if the portal collapses.
  • Privacy. While yokai can get a general sense for how much ki another has in their ki reserve, the app gives exact amounts.

  •   The younger generation is capitalizing on the free version of the calculations for a single portal. A few yokai owned businesses have started to use it to help with transport of goods, trade, sending messages, and managing portals for entry to and from conventions. Time will tell if the subscription service is widely adopted.   Rumors say three things:
  • The inventor has a full ride scholarship at Kyoto Jidai Arcane University for the contribution to mage science.
  • The app was adopted practically overnight by every mage in Sumichou.
  • The Portal Creation Guild is in talks with the inventor.



    1 https://www.physics.uci.edu/~silverma/units.html

    Cover image: by Odette.A.Bach (Art), AWV (text)


    Please Login in order to comment!
    3 Aug, 2023 14:32

    This article is well documented, pretty and incredibly immersive. I have no advice for you, except to keep this incredible worldbuilding skill with you because it's amazing. I loved reading about it and I will probably be reading more from you in the future. This article was just that good.

    9 Aug, 2023 15:59

    Thank you! <3

    Author of the Liminal Chronicles urban fantasy series | vssCollab very short story prompts | Author Website
    3 Aug, 2023 15:58

    Oooo, an app! I love it. The quote made me laugh though. The inventor sounds so exasperated.

    Emy x   Etrea | Vazdimet
    9 Aug, 2023 15:59

    Lol! Yes, the inventor is, and doesn't understand the hesitancy to adopt his idea. Thank you!

    Author of the Liminal Chronicles urban fantasy series | vssCollab very short story prompts | Author Website
    Powered by World Anvil