Chi Attunement is the process by which a kuei-jin learns to enhance their physical abilities through study of a particular shintai. While Kindred can naturally use the power of their blood to enhance their physical abilities, kuei-jin cannot use chi in this way without training. Each shintai is "attuned" to a specific physical ability, and as a kuei-jin progresses in their study of the shintai they gain the ability to temporarily enhance the attuned ability.