Tatsuyuki Nagai is a Japanese anime storyboard artist and director He made his full directorial debut in 2006 with Honey and Clover II after which he had directed 2007s Idolmaster Xenoglossia 2008s Toradora 2009s A Certain Scientific Railgun 2011s Anohana The Flower We Saw That Day 2012s Waiting in the Summer and 2013s A Certain Scientific Railgun S