The Last Constellation: Stars that Bloom in the Night

"The stars do not bloom because the night is kind. They bloom because even darkness cannot swallow their light."

The night her family was torn from her, Mitsuki Sano made a silent promise beneath a sky she could no longer bear to look at.

Haunted by the demon who chose to spare her life, Mitsuki joins the Demon Slayer Corps, wielding the graceful art of Star Breathing and a double-ended Nichirin scythe. Behind her gentle smile lies a heart burdened by grief, memories that refuse to fade, and a question that has followed her since childhood:

Why was she left alive?

Everything changes when her path intertwines with Tanjiro, Nezuko, Zenitsu, and Inosuke. Through impossible battles, unbearable loss, and the family they build together, Mitsuki slowly learns that even the deepest wounds can begin to heal when they are carried by more than one heart.

But as old nightmares awaken and the truth behind the night that changed her life begins to surface, Mitsuki must face the demon who stole everything from her, and the destiny written among the stars long before she was born.