Carefully Hug My Sister's Thigh Tightly

The end of the world appears without warning... As all kinds of terrifying monsters appeared, a small group of people finally couldn't hide and had to stand up... Ordinary people from several worlds huddled together to keep warm, and grew up... The sister who had always been close to each other opened her mouth to eat someone... Fortunately, I am not a bad person... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.