再悲詩：ダークギャザリング、ゴシックの哲学者たちの歌でも詩でも成れ！（ダークギャザリング６話ネタバレ）Dark Gathering, become Gothic Philosophers Song and Poetry!（dark gathering episode 6 spoiler)

Declaration that this is a work ex rebus Dolorum
この作品は再悲詩(Ex Rebus Dolorum)であることを宣言する
all sorrow is triumph and all triumph is sorrow
すべての悲しみは勝利であり、すべての勝利は悲しみである
omnis dolor est triumphus et omnis triumphus est dolor.
I of the sorrows
哀しみの我から
Ego Dolorum

「再悲詩」のマニフェストーーー新しい詩の試み Manifesto of Dolorum---a new experiment of poetry ｜JTR777 (note.com)

原作：ダークギャザリング ６話から 解読と推想（原文は是非アニメや原作に参考してください）：

この呪いによって、ようやく彼を私に縛り付けられた
また「我儘な若い頃」までみたいに、一緒に恐怖を探しに行こう！
此岸の果て、三途の川を渡り、彼岸に足を踏み入れて
この世界を覆う、「未知」の腸をこじ開けて！
つまびらかに死に行こう！
つまびらかに詩に行こう！
つまびらかの無限の中で永遠に生き続け、永遠歩いていこう！
「運命」を探しに！
「運命」を生き、歩い続き。
「運命」、それで私がお前をつかまえった！
「運命」、永遠に！

To t'is curse was bound, finally, "I" and "thee" that were so apart!
Mortals we, though once in mortality we did not know; in bluest boy-blood.
Yet did not we venture fiery songbird-like Spring-happy,
Searching for sweet blooming Death's sorrow-ghost
Amongst solid of stone and shades of stream!
To the end of This-Shore, travelled; crossing the River,
tither to Yonder-Not-So-Soon.
Did we not ween to crack open the Maker's most holy unknown--
his dark, dark brain---omniscient and omnipotent---yet crawling and hid;
was the sorrow-ghost, Death; profound thee,
we should have came and became to confound thee!
and mayhap we should too drink that flaming ambrosia divine; drink we.
from men becoming wiser men; Homo Sapien, wiser still!
Stronger, sadder, more joyful, upon we us feet thus stand!
Stole the fruit Wisdom from not God's hand. But his head!
Fruit----that is an Idea!
Did we not pierce God's red pumping telltale-heart;
with cold, sharp syringeal beak,
and in suckling his heart's ardour and passion found we,
most merciful succour for the bitter love and life? this heart's drink which we call;
mysterious riddlesome riddle, of but against Doom and Gloom!
and would we not open up God's belly, 
with what we have crafted, from our heart's fire and with brain's design,
---a knife. a knife! a wise knife---and with one bare Hand too drag out the bowels….
did we not slay and rip apart---Jacked it! to tell the telltale signs?
entrails red, warm and wriggling---happy, happy dead, secret-telling snake! 
From the divine Tharmas of the slain animal God we learnt his working;
(Augurs! Augurs of Innocence----innocently slain
so---it would be made known to the Science of Experience!)
and tell, the workings of all that are divine as we divine it! TRUTH!
Beyond the Blue tears of Life! Let us come, let us go!
Death, welcome! Death, go before me;
you are yet come before my experience!
Experience, arrive through the Stream (cross it a-rrive(r)ed)! Joyful Tyger,
come and love me
with thy sharp fangs and shiny claws!
Beyond the black silent Shore of Death! Let we become, Let we advance!
Austerity, I am three times than thee more austere! (For I live three Lives)
Innocence, go! Dead lamb, cry ye no more! You have changed
to be my meat!
to be my treat!
Sleep hence in sweet Innocence, a crib, nestled among my warm bowels and soothing entrails…
dream….
feed my redly palpating heart,
and my darkly incinder'd brain!
Eternity---transcend me! Try and plunge me into Despair! No, No, No.
I am thy Death, I have came austere hither…from the blueness of youth;
I am grown to the darkness of Man, well-travelled. Come to my bosom, thither things eternal.
I shall have you all amorously smothered and drowned,
in my profound love---the immeasurable abyss
that is wisdom--philosophy--Happy Science---the love for the whole Universe!
"Walked I upon and through this world of labyrinth,
and with and through time patient
I have it all deciphered and unriddled, with sound Maths;
I am came, a cosmic solution and solvent, al-Chemical:
I am became, and I walked! But listen---whose feet, Philosophical
are yet still hammering down upon the unknown----
Happy, with the cadence of a joyful Song.
Hurried jogging and kicking, Tactical, leaping with Yea, without dread, without fear----rather, speaking to the Unknown with whose Transcendental Tongue,
Elucidated:
"fear me, and tremble. I am came to tread you.
Unknown, I am your Death; come, you are Dead.
Joyous, I have killed God, and learnt his Word.
Joyous, God is known to me, and I have got his Tongue.
I am the doomed Destiny of the whole Universe, I am found;
by myself in solitude---nay, with my Muse.
She is my Muse!
Down here.
I am the Eternal Life that is swimming in the Paradise;
paradisal Abyss, I am inside thee.
She is inside me!
Down here.
'Fate', I have caught your throat.
Moan!
Moan ye, Fate!
Up there!
'Fate', my name is Man.
Once more!
To this curse Mortal; bound Once More!
Together!
I am Once More!
'We' are together~!
I see, I saw; I come, I came; and I am caught you.
Forevermore! You are mine.
'Fate'-----of myself, of Man, of God, of the shadowy sorrow-stalked Universe!
Together!
Ecce Homo, ex abysso-----This is Man!
Ecce Universus, ex abysso----This is our Universe!
Death, out of abyss------I see you, watch out!"