A light novel adaptation written by Kimino with illustrations by Sana Wakatsuki was published in seven volumes under Dengeki Bunko between April 2009 and May 2011.

[1][2] A manga adaptation illustrated by Yasuhiro Miyama was serialized between the May 2011 and August 2013 issues of Dengeki G's Magazine.

An original video animation adaptation by Studio Comet was released on July 20, 2011 on Blu-ray as a 3D and 2D edition set with the title Baby Princess 3D Paradise 0 (with special 3D-glasses) and on DVD as a regular 2D edition with the title Baby Princess 2D Paradise 0.

[3] When his grandmother and last remaining relative dies, first-year high school student Yōtarō is orphaned.

He ends up being adopted into a family of 19 daughters, each with a different personality, ranging in age from several months old to 18 years old.