SNS site for Cosplayers

Mobile App

COSPO is an app that allows users to support and discover Japanese cosplayers.
Users can view photo posts and tap the “KAWAII” button to cheer for cosplayers.

Durations:

Team size:

Requirements Definition

Basic Design

Detail Design

Development

Testing

Release

Maintenance

Through real-time photo updates, free-to-view posts, and a user ranking system, the app promotes interaction between fans and cosplayers.
Key features include:
・Posts (text, video, photos)
・Point rewards
・Events
・Rankings

Devices

Browser(Chrome, Safari), Iphone, Android Phone

Server and others

Sakura Cloud

Technology

Java Spring Boot

NodeJS

Flutter

Challenge

While the platform thrives on fan interaction and popularity (via the KAWAII button, rankings, and points), this structure can create imbalances and discourage emerging or lesser-known cosplayers:
・Popular cosplayers dominate rankings, making it harder for newcomers to get discovered
・“Point farming” or unfair boosting can skew rankings and affect credibility

Solution

Tiered Ranking System
・Separate cosplayers into tiers or leagues (e.g., Newcomers, Rising Stars, Pro Level), so users can discover talent across experience levels
・Rankings reset periodically per tier to give everyone a fair chance at visibility and rewards
・Allow users to filter by tier when browsing posts or events

KAWAII Engagement Algorithm
・Weight “KAWAII” points based on user engagement level (e.g., long-term fans vs. bots or spam accounts)
・Cap or decay older points to prioritize recent interactions, keeping rankings dynamic
・Detect and flag suspicious voting patterns (e.g., vote spamming)

Project Gallery

(6)

Others

Related Works

3D・AR・VR

Differential diagnosis system

Its key features include: ・Patient Record Management: Organize and manage patient information for each clinic. ・Staff Management: Oversee and coordinate medical staff, including doctors. ・3D Human Body Model for Diagnosis: Utilize a visual 3D model to assist in disease diagnosis. ・ChatGPT Integration: Leverage AI to generate diagnostic questions and conclusions based on historical patient records. ・Stripe Payment Integration: Facilitate secure and efficient payment processing.

Technology

T-shirt printing Design system

The system offers a range of templates and design tools to facilitate personalization, catering to both individual and business needs. ・TOP page ・Account related ・3D clothing design (text, image, hand-drawing) ・Order form ・My page ・Sublimate order management

Technology

3D Color Cones Design System

They are suitable for various settings, such as events and parking lots, and their foldable design makes them easy to store and transport. Key features include: ・Account-related functions ・Homepage/Paper cone design ・Standard design ・Data submission ・Fully custom design ・Payment function ・Chat with staff ・My page ・Inquiries ・Notices Roles: Client, administrator, agency, operator, designer, printing company

Technology

Laravel

VueJS

ThreeJS