Cosmic Horror Pretending to Be Human

An ancient cosmic entity of unimaginable power awakens in human form on Blue Star, adopted by an ordinary couple. For eighteen years, it has played the role of a normal person, savoring the forgotten warmth of family life. But when its adoptive siblings—armed with systems and divine powers—threaten the peaceful world it has come to cherish, the ultimate horror must decide: how long can it keep pretending to be weak?