//Writing System

▸Rakugana — The Syllabary

Rakugana (落画名) is Edenian's procedurally generated syllabary, inspired by Japanese kana crossed with Zhuyin and Indic scripts. Each glyph represents a single CV syllable.

Design Principles

• ▪Each consonant row has a distinct visual family (base stroke pattern)
• ▪Vowels modify the base pattern through height, curve direction, and weight
• ▪Front vowels curve leftward; back vowels curve rightward
• ▪Consonant harmony class adds diacritical strokes: solar (dot), lunar (ring), lunisolar (dot+ring)
• ▪Long vowels are rendered by rotating the glyph 180°

Consonant Row Shapes

Yo'on Multigraphs

Complex sounds that cannot be represented by a single CV glyph use multigraph combinations:

• ▪Gemination marker — Small doubled stroke (equivalent to Japanese っ) for consonant doubling
• ▪i-glide marker — Attached diacritical for -ya, -yo, -yu type combinations
• ▪u-glide marker — For -wa, -wo combinations
• ▪üe-front glide marker — For front-vowel diphthong combinations
• ▪Final consonant mark — Coda consonant indicator for CVC syllables

▸Sujamo — The Featural Abjad

Sujamo (聲字母) is the featural block writing system, structurally similar to Korean hangul but with an Arabic-influenced consonant dominance. Used primarily in the Basement sociolect for slang and informal writing.

Featural Design

Consonant shapes encode articulatory features:

Manner of articulation adds modifier strokes to the base shape:

Voicing is marked by a vertical bar through the center. Aspiration adds a tick mark at the top.

Block Composition

Sujamo blocks follow hangul-style composition:

• ▪Unrounded vowels: Consonant left, vowel right (horizontal reading)
• ▪Rounded vowels: Consonant top, vowel bottom (90° rotated — vertical reading)
• ▪Optional coda: Final consonant placed at bottom-right of the block

Basement Obfuscation

The Basement sociolect deliberately corrupts sujamo spelling: doubled onsets, silent ng codas, archaic tick marks, and phonetically nonsensical clusters that require cultural knowledge to decode.

▸Edenji — The Logographic System

Edenji (伊甸字) are procedurally generated logographic characters, inspired by Japanese ryakuji (simplified kanji) crossed with Tangut, Jurchen, and Khitan scripts.

Character Composition

Characters are assembled from radicals using IDS (Ideographic Description Sequence) operators:

Radical System

The radical library contains 256 components organized in a 16×4 grid:

• ▪16 grammatical classes (Action, Process, State, Condition, Relation, Connection, Entity, Collective, Measure, Ratio, Signal, Modifier, Mood, Style, Wildcard, Innovation)
• ▪4 semantic domains (Elements, Life, Abstracts, Artifacts)

See the Radical Explorer for the full interactive inventory.

Generation Pipeline

1. ▪Seed word → deterministic hash
2. ▪Hash → radical selection (domain + class)
3. ▪Radicals → IDS layout template
4. ▪Layout + radicals → KAGE stroke data assembly
5. ▪Stroke data → Mincho/Gothic renderer → SVG polygons

See Glyph Generation for a detailed walkthrough.