Note: There are a couple of typos in the source text, and I can't guarantee the accuracy of the English version, because there is some seriously weird and/or abstract terminology in there. It is probably better to treat it as a rough guide rather than a proper translation.
Refers to the ritual in which a baby that has grown its teeth is fed its first meal. It also wishes that the child never goes hungry, growing healthily. Perhaps these words are a prayer for the ritual's success to the twins.
The word itself has no specific meaning, but from the lyrics in the third verse, "pile up the nine robes and return them to one," you can imagine it perhaps referring to the subject during the rite. Though you could also take it to mean the mulberry fruit or their new (imitation) soul...
A legendary cocoon. It is said to be particularly difficult to raise the silkworms that spin it, and as such its cocoons garner a high value. As well as indicating the creation of a cocoon, it is a phrase that seems to imply the difficulty of completing the rite.
misu ni utsutta karagoromo
obake tsuzura ni tsuzumi no ne
kuwa no mi wo tsuketa hana shitone
kinuito tsumugu magaidama
shizuka ni yureru hashizoroe
hitoe ni hibiku kiraibashi
kage ni hotsururu maigoromo
tadayoi ayumu yuzukuyo
kore yori Toribeno yashiro michi
nido wa modorenu kurimou de
furuete yureru kami kakari
kasanete utsusu kiraibashi
akaku minotta koishimaru
mayo ni nijimuru yabutsubaki
kokonotsu onzo wo kasaneite
hitoe ni modoru magaidama
kuon no tomura haraegushi
yumegoto ni chiramu kiraibashi
Both are Heian period outfits. This is one of the phrases that represents the era in which the song is being sung (the time in which the game is set).
Ways in which chopsticks should never be handled. Sometimes it also refers to people who are poor at using chopsticks, leading others to dislike them. Maybe a hint at the forbidden, undesirable techniques used in the "Kuon".
the shadow of a karagoromo on the blind
a clothes hamper full of monsters and the sound of a drum
a shitone with a mulberry fruit on it
a magaidama spinning silk thread
quivering silently, hashizoroe
kiraibashi echoing humbly
a maigoromo shrouded in shadow
wandering through the moonlit evening
continuing to the shrine path to Toribeno
repeating, unable to go back
tufts of hair waving
shown as one, kiraibashi
a red-ripened koishimaru
a cocoon spread across a red camellia
pile up the nine robes
a magaidama returning to singularity
eternal mourning, purifying stakes
scattered as a dream, kiraibashi
A shitone is a type of matting used for sleeping and sitting on. Matting with a mulberry fruit on... This could perhaps refer to the silkworms sleeping in the mulberry tree, or maybe to the wicker chest in which the test subjects sleep.
A cemetery at the base of Mt. Higashiyama in Kyoto. Carrying on from the next part, "you can never return ...", it may perhaps represent that this rite does not bring the dead back, but rather is another kind of burial rite.