Seven Arcs Co., Ltd. (株式会社セブン・アークス, Kabushiki kaisha Sebun Aakusu?) is a Japanese animation studio established on May 31, 2002 and is located in Nakano, Tokyo, Japan by former Studio Pierrot staff. The company originally produced adult original video animation series under another animation studio named Arcturus since April 2000 and had the intention of eventually producing anime television series, which became possible in May 2002 when Seven Arcs was formed. At first, they continued to produce adult OVAs, such as Night Shift Nurses, but in 2004, moved on to create their first televised anime series, Magical Girl Lyrical Nanoha. Since then, the company has produced a number of other animated television series and movies.