How a Tsuki no Ito reading is woven.
Three threads meet in every person, and they do not change after birth:
Four blood types × twelve signs × twelve animals = 576 types. Every reading in Tsuki no Ito begins from your one type.
Your sign follows the sun's position (its ecliptic longitude) on your birth date; on boundary days the sign can shift by a day depending on the year. Your animal follows the calendar year from January 1 — this differs from the lunar-new-year and Lichun conventions used elsewhere, and Tsuki no Ito states its basis openly rather than hide it.
Over the fixed type, the reading lays the living moon: its age, its phase among eight, and the days to the next new and full moons. 576 types × 8 phases = 4,608 different "todays". This is why the same type reads differently from one week to the next.
At the new moon, write down what you want to grow — quietly, for yourself. At the full moon, read it back: give thanks, keep what grew, release the rest. After the last quarter, finish and forgive. Before the new moon, rest. These are small habits of reflection from the Japanese moon-viewing tradition — the same sensibility that gives the slightly-waned moon of the thirteenth night its own celebration, because being on the way is not the same as being incomplete.
No type is ranked above another. Every type is read as a pair — where its strength shows, and where it tends to stumble — and even the lowest day in any ranking is translated into how to spend it, never into a verdict.
The world of Tsuki no Ito — the moon, the golden thread, the loom — draws its inspiration from Japan's moon shrines and from the weaving lore of the old capital region: the idea that a life, like cloth, is threads held in tension, and that fate is read in the pattern they make together. The 576-type weave itself is Tsuki no Ito's own way of holding three older threads in one frame.