Sakura Mikan is a cute and sunny girl who always smiles. Since his parents were assassinated when he was six years old, he has been working hard to find the murderer of his family for ten years. By chance, she rescued two mysterious teenagers, Hinata Zao and Nogi Ruka, by the trash can under her balcony. They have beautiful faces and breathtaking eyes.
They were deeply attracted by Mikan's kindness and purity, and fell in love with her without hesitation. However, their life experiences made them dare not express their love for her.
Hinata Zao and Nogi Ruka, two beautiful young killers with super dark backgrounds and mental disabilities. They appear and disappear, and their evil and indifferent aura deeply attracts Mikan.
The coquettish black mandala and blue mandala blooming next to the corpse are a symbol of their murder and a portrait of their power.
So a forbidden love swirling around mutual opposition, a love story stained with blood and love and hatred unfolds.