This post is contributed by Mr. Yuichiro Ueno, who were a Summer intern in 2017 and a part time engineer at PFN. If the mathematical expressions are not displayed correctly, please reload the page via this link. Hello, I am Yuichiro Ueno. I participated in a summer internship program at PFN in 2017, and I currently work as a part-time engineer. I am an undergraduate student at Tokyo Institute of T