Nebulae

Han Seo grew up hearing that anything less than first place is useless. Just as she was endlessly consumed by her own existence—unable to satisfy her father no matter how hard she tried—she encounters an extraordinary killer on her ordinary commute home. In her haste, she kicks the man in the testicles and runs away, but the killer tracks her down to her house and introduces himself as a creature from an alien planet called 'Agape.' Furthermore, he claims that Han Seo is a 'flowerpot' for the alien species, with a 'seed' planted inside her body... "Do you know the easiest way to germinate a seed? It's pleasure."