Series by 高畑弓

A child-hating single salaryman encounters an alien princess who declares her goal is to wipe out humanity. She arrives on Earth intending to invade but becomes stranded and unable to return home. The man ends up taking responsibility for the young girl, who unleashes destructive superpowers whenever her emotions explode. He struggles as a novice guardian to manage her outbursts and protect Earth from accidental harm. Their daily life fills with chaotic troubles as he begins raising her and they gradually form a family-like bond.