3-4 stages, last stage was really unexpected a far more intense behavioural and background interview, wasn't really given any materials from the company. However HR was super helpful whenever I reached out.

the first ai round was really easy. then the actaully first round was also Pretty easy first round. Asks you the basic questions. tell me about urself, what do you do at school etc.

I only attended the first interview. The HR manager was neither friendly nor unfriendly. It was just a normal screening interview. Only self-introduction and motivation for application were conducted in English, and the rest were conducted in Korean. The HR manager asked questions focusing on my background and history rather than understanding the job itself.