We also have a case study of this project with some code on our agency website
It’s only in Korean but I think google translate can help you understand the main idea https://studio-jt.co.kr/projects/컬러버스/
The Three.js forum really help us to solve multiple problems so thank you to all the Three.js community~
@Maguie Because I’m just the developer of this project I think it’s better you contact the web agency I work for to get information about the cost contact@studio-jt.co.kr