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"Meeting you and my world has changed" 'Girlfriend out of this world' is a monster network that is sensitive to injustice, but is suspenseful when Seo Seok (Kim Sang-woo), who ranks dead last in the entire school, accidentally takes a cell phone that does not belong to his the owner, and later gets tangled up with Goo Hana (Jun Ji-min), the best person in school.