How stupid is it to have a chosen brother who destroys the world at the slightest disagreement? As a younger sister, I can only risk my life to save him. Male protagonist version of the first life: My younger sister hates me and doesn't want to live anymore, so let's destroy the world. Second life: My sister is not cute, she is so boring, so let's destroy the world. Third life: My sister didn't recognize me and is jealous, so let's destroy the world. The fourth life: The world is so good. How about destroying the world? Why am I not so good? Mmm, it smells so good