I Lost My Memories and Became Everyone's Darling in the Apocalypse

In this world, there is a terrible calamity known as the Abyss. When its power gathers within a person, they lose themselves and become a claw of the Abyss, known as an Apostle.

Tian is an amnesiac girl who somehow appeared on the battlefield between humanity and the Abyss. After the orphanage where she lived was destroyed, she joined an organization and set out to fight the Abyss. And after that...

Tian: Um, could you please take your hand off me, big sister? Don't touch me like that! (ㅍ_ㅍ)

(The first few chapters are a little slow, but the main story gets going a couple of chapters later.)