Robinson did have had a whole experienced Japanese crew, plus Madeon, for creating that anime-flavored music video as his interest in visual art never ceased to take a break.
Porter Robinson is a huge fan of anime and Japanese culture. Considering he's been making music all by himself since 12, it was surprising that it took quite a time for him to launch that project after being stuck for a whole year. Still, 'Shelter' was his biggest success, with over 52 million views on YouTube at the time of writing. But leave it to Reddit users to debate about it. There was that one time when people were debating whether to classify Porter Robinson's production of 'Shelter' a music anime or not because it was produced outside of Japan with a different style, which makes your head wrap to understand.