Apparently this series is still around.
Gematsu said:Nippon Ichi Software is developing ClaDun Sengoku for PS Vita, the latest issue of Dengeki PlayStation reveals. It will launch in Japan on May 26 for 5,184 yen at retail and 4,114 yen via download. First-print copies will include a Real & Retro soundtrack selection including the theme song and 60 minutes of background music from the game.
Read more at http://gematsu.com/2016/02/cladun-sengoku-announced-ps-vita#pCXOzB4TBvpWHIVI.99