Kogado Studio is a Japanese video game studio which has released adventure, strategy, and bishōjo games for the MSX, MSX2, PlayStation 2 and PC, including such titles as Symphonic Rain, Gadget Trial, Little Witch Parfait, and Tristia of the Deep-Blue Sea (which has been made an original video animation), and the Power Dolls series. The studio has a number of teams working together.

[From Wikipedia]