There is no game currently known as "Deep Piece" published by Kagura Games . It is highly likely you are referring to , a direct sequel to Senran Kagura Burst developed by Tamsoft and localized for the Nintendo 3DS. Senran Kagura 2: Deep Crimson
This title is an action hack-and-slash game focusing on the rivalries between "good" and "evil" shinobi academies, specifically Hanzo National Academy and Hebijo Clandestine Girls' Academy. SENRAN KAGURA 2: Deep Crimson Review Kagura Games