Princess Patra of the planet Ptolemy has chosen "Invasion of Earth" as her summer research project! However, her homework keeps getting delayed due to her cozy life on Earth! Thanks to Patra-chan's love for Earth, today will be another peaceful day... (Source: Houbunsha, translated) Note: Includes 2 extra chapters.

Volumes

2

Start date

June 7, 2014

End date

April 1, 2017

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