About “Penguin Musume”
Penguin Musume is a Japanese manga series written and illustrated by Tetsuya Takahashi. It was serialized in the shōnen manga magazine Weekly Shōnen Champion from May 2006 to November 2007. A follow-up series titled Penguin Musume Max was later serialized in Champion Red, running from December 2007 to January 2010. Both series were created by the same author and published in different magazines. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.