The whole process took about 3 months, from application day to getting the letter. The codility questions were very basic, and for the video interview, they provided me with the questions beforehand on the description email, allowing me to prepare the optimal answers. After that, I was given a chance to do a skype interview with 3 members of the company's headquarters in japan. I felt that the interview was more focused on figuring out if I would fit in to the company, rather than focusing on testing my skills required for the internship. There were very little technical questions throughout the whole interview.