Heart's Abyss: The Secret Keeper

Have you ever seen a city that devours people? Every day, someone vanishes into thin air. Not death. Not disappearance. But — complete erasure from existence. Their loved ones forget them. Their friends overlook them. Their records show no trace. As if they never came into this world at all… The relevant authorities have designated these incidents: 《Heart’s Abyss》

Original Webtoon:
AC.QQ, BiliBili, KuaiKan