For Carl, Maya has always been the cherished older sister.

For Maya, Carl has always been the beloved younger brother.

They may not have always been the best of friends, nor are they ever the worst of enemies. Sometimes they disagree, sometimes they support each other, sometimes they simply talked. It is a familial bond, nurtured through years of living together.

Then came the incident. Wrenched from their peaceful lives, where their only worries were passing exams and wondering what to eat for lunch, they are now thrust into a world unlike any they have seen. One where they have to constantly fight to safeguard their food. One where they will be eaten if they are careless. One, where death is just around the corner.

With no hope or help, will their familial bonds remain strong or will this be the end?

Author's Note: The fluffy prequel of this story was here: http://hugginglove.blogspot.com/2016/02/theirlastvalentine.html Please take note that the prequel's tone is not indicative of the tone for this story. Also, please ignore the different names of the male protagonist. Ai-chan assures you, this is the prequel. Ai-chan will also repost the prequel here, but hasn't gotten around to editing it yet. Please expect it later this week (9/3/2021).