What problem does it solve? Korean prose often suffers from long sentences, passive voice, Japanese-influenced expressions, difficult Sino-Korean vocabulary, and weak subject-predicate agreement. This Skill diagnoses these issues paragraph by paragraph and produces conservative and aggressive revision suggestions grounded in authoritative Korean writing guides. ## Core Features & Use Cases - Nine-Principle Diagnosis: Checks every paragraph against nine principles (front-loading, short sentences, active voice, plain vocabulary, no clichés, confident tone, precise word choice, iterative revision, subject-predicate agreement) with source citations from 임승순 「법률문장론」, 국립국어원, 이오덕, 이태준, and Orwell. - Four Operating Modes: Mode A (full diagnostic), Mode B (30% length reduction), Mode C (one-line thesis extraction from headings), and Mode D (grammar and loanword refinement), auto-selected from request keywords. - Pattern Replacement Tables: Applies concrete conversion rules such as difficult Sino-Korean to plain words, Japanese-style to native Korean, English-style relative clauses to natural Korean, and passive to active constructions. - Use Case: A law student pastes a cover-letter paragraph like "이 분야에 진출하고자 하는 마음이 매우 강하게 들었던 것은..." and receives a violation table, a conservative revision, and an aggressive revision with per-word change tracking. ## Quick Start Paste a Korean paragraph and ask the assistant to run a full nine-principle diagnostic review with conservative and aggressive revision suggestions.