Grounded in teaching
The reading, assessment and instruction experience of a novelist and essay educators.
Nonrium · AI learning company
Better feedback.Deeper learning.
We connect writing expertise with AI to turn a single review into a repeatable path to better thinking and writing.
First product: WRIDIT. First market: Korea’s admissions essays.
WRIDITA structure for better thinking
Claim
Good writing begins with connected thinking.
Evidence
Connect the sentence to a criterion. Understand why it should change.
The next draftRevise with a reason.
A concept illustration of Nonrium’s learning approach
Educator judgmentNonrium AIRepeatable learning
Turning expert judgment into a learning system.
Nonrium goes beyond a model’s response. We design how an essay is read, why it should change, and how that feedback connects to the next lesson.
Reasons you can inspect
A development approach linking a sentence, an assessment criterion and a reason to revise.
Built with product discipline
Enterprise software planning and implementation experience developed at Leysys.
WRIDIT · Our first application
Where a review ends, the next lesson begins.
WRIDIT connects feedback informed by university essay criteria with educator guidance in online classes. Reading, reasoning and rewriting become one learning experience.
- 1
Read and write
Understand the prompt, then turn a claim and its evidence into an essay.
- 2
Understand the feedback
Use AI feedback and instructor guidance to see what needs to change, and why.
- 3
Rewrite and learn
Compare the reasoning and expression before and after revision. Apply it to the next essay.
Illustrative learning flow · Product development and online-class validation
WRIDITIllustrative learning flowThe WRIDIT learning experience
Is cost enough to judge a public facility?
Passage A emphasizes shared public benefits. Passage B emphasizes efficient resource allocation.
Therefore, a costly public facility should not be built.
Distinguish the public-benefit criterion in A from the cost criterion in B.
Feedback that carries into the next essay.
Nonrium AI
Toward AI that explains why a sentence should change.
University criteria, evidence in the essay and educator judgment. Nonrium AI focuses on connecting these three elements for writing education.
Explore our AI approachFrom assessment criteria to a better draft
Research & development designRubric and source material
Student responseUniversity prompts · source texts · assessment criteria
Response analysis
Connect claims, evidence and structure to the rubric
Where is the evidence?Evidence-linked feedback
Locate the relevant passage and explain the assessment
Why this assessment?Instructor review
Check interpretation and add teaching context
What needs guidance?Rewrite
Compare revisions and shape the next learning step
What changed?
The revised response starts the next learning loop
A precise starting point inside a substantial market.
Korean admissions essays present a concrete problem: university-specific criteria and repeated feedback. We distinguish the wider market from the initial demand we need to validate.
Explore the market evidence27.5tn KRW
Total private education spending in 2025
Primary and secondary students · down 5.7% YoY · not an essay-only market
Ministry of Data and Statistics · 2025 surveyKRW 604,000Monthly spend per participating student
Essay admissions concentrate in the capital area
Essay-based admission places · 2027 & 2028 admissions · published 30 Apr 2026
Change for 2028+413 places
National places are nearly flat; the capital area adds 413. Admission places are neither applicants nor the size of a paid-learning market.
The craft of writing. The discipline of building.
Literary and teaching expertise meets strategy and software experience.
Meet the founding teamCo-founder · Technology & business
Kyoungsup Choi
최경섭
Founder and CEO of Leysys. Bringing enterprise software planning and product experience to an education platform and its operations.
Experience and credentials
- Previously at BCG and Strategy & Planning at SK hynix
- Studied at UC Berkeley Haas School of Business
- ERP, CRM, proptech and legal tech product planning since 2018
What this brings to Nonrium
Designing the product and the business.
Experience structuring complex business workflows informs a learning system that connects essays, feedback and class operations.
Co-founder · Education & content
Park Young
박영
Novelist and essay academy operator. Connecting the practice of writing and teaching to deeper learning and more useful feedback.
Experience and credentials
- Creative Writing graduate, Korea University
- Literary debut through the Kyungin Ilbo contest in 2015
- Third Hwangsanbeol Young Literature Award, 2017
What this brings to Nonrium
Shaping the standards for writing and learning.
The practice of writing and teaching informs feedback that helps students understand what to change, and why.
Validate learning first. Then scale the model.
Education quality and operating practices established through WRIDIT and online classes will set the standard for later partner expansion.
- 1 Current focus
WRIDIT + online classes
Connect AI feedback with instructor guidance. Validate learning outcomes and willingness to pay.
Proposed model: tuition and feedback fees
- 2 Next opportunity
Academy partners
Bring curriculum, feedback standards and teaching tools to partner academies.
Proposed model: institutional fees and content licensing
- 3 Longer-term option
Essay academy franchise
Consider franchising once educational quality and operational repeatability are demonstrated.
Proposed model: franchise and operating support
These are proposed expansion stages and business models, not claims of current revenue, contracts or franchise operations.
Investment & partnerships
Help write the next chapter of essay education.
We welcome conversations with investors and partners interested in WRIDIT and online education.