Company. Still, it's very strange that he was able to do it so quick. Looks like he was planning it for a long time.
Not sure how it works in Japan but here in the UK you can literally register and create a company in a week going by this news Japan seems to have a quick process as well.
Sure, registering the company can be quick but it looks like he did not only registered the company but also has some employees that will start working for him since January. And finding people to do the job isn't as quick as just registering the company.