ムラサキ
A shooter game with some puzzle elements.
Authored by wtetsu (creator of Irisu Syndrome!)

Free version (Japanese only):
http://members.jcom.home.ne.jp/wtetsu/mu/

International release (Steam):
http://store.steampowered.com/app/392030/

Creator's homepage:
http://members.jcom.home.ne.jp/wtetsu/
murasaki (game)