Even If the World Ends, We Must Build Our Hearts

Apocalypse + non-zombie + growth-oriented protagonist + single female protagonist A dark castle appeared out of thin air in the sky of the city, and missiles like fireworks exploded in every corner of the city... The boy in the ruins meets the machine girl, and a redemption in the apocalypse begins. "What is love?" The white-haired girl under the starry sky said this calmly while looking into the boy's eyes. The young man's broken heart seemed to become complete at this moment, and he decided that he must survive and save her.