Tatsuyuki Nagai(長井 龍雪Nagai Tatsuyuki, born 24 January 1976 in Niigata Prefecture) is an anime director and member of the noted anime studio Sunrise. He made his full directorial debut with 2006's Honey and Clover II, after which he had directed 2007's Idolmaster: Xenoglossia and 2008's Toradora!. He will next direct the recent Kaitō Tenshi Twin Angel.