After graduating from university in 2007, Tachikawa joined Madhouse where he debuted as an episode director on Kiba's final episode. After this he went freelance.
Some years later in 2013, Tachikawa created, wrote and directed Death Billiards, a short film produced by Madhouse as part of Young Animator Training Project's; Anime Mirai, a project which funds young creators and animators. Two years later, Tachikawa got to turn the idea into a 12-episode TV series titled Death Parade.
