Complex sentence: In December 9 and 10,2015, Shirai competed at home in the 2015 Toyota International Gymnastics Competition in Toyota City, Japan where he also successfully completed his third original skill on floor to take his name.
Split into simpler sentences: In December 9 and 10,2015, Shirai competed at home in the 2015 Toyota International Gymnastics Competition in Toyota City, Japan. It was also there that he successfully completed his third original skill on floor to take his name.