In the Apocalypse, I Own a Saintly Lady's Manor

[A Soft, Adorable Peach Blossom Sprite vs. An Ability Squad Captain Who's Sometimes Cool and Distant, Sometimes Clingy. Sweet Romance, a Different Apocalypse Experience]

The peach blossom sprite Lin Buyan was so playful that she caused the Flower Goddess's favorite rose to wither. As punishment, she was sent down to the mortal world to experience life. By a twist of fate, she ended up in an apocalyptic parallel world and somehow became bound to the Apocalypse Savior System.

If the System is so powerful, does that mean I can just lie flat?

System: “Why don't you try?”