Two detectives Asahi and his partner, Ren, are investigating a recent stream of murders throughout Z city, it had been taking up all their time and as righteous individuals they didn't let themselves rest before catching this monster.
The murders all had one thing in common, they were brutal, there seemed to be a chase and knife marks littered every victim, the murderer seemed to have enjoyed herself/himself with these victims
Some leads and connections led them to an abandoned building and as they were stealthily going through the building they suddenly heard a cry of pain followed by an insane laughter cutting through the quiet of night
Rushing there they found a dying women under a girl, the girl didn't seem older than 15, she had shoulder length brown hair, blood red eyes with... Black scalera? A red turtleneck sweatshirt, a short skirt, her frame was petite yet attractive she had two piercings on her left ear and her muscles seemed slightly muscular
"I've been waiting for you, Ren togata, Asahi neokama, you're very impressive to have found lil ol' me, if I'm not mistaken Asahi, you have a Wide and four children, and you Ren have a girlfriend slightly older than you, or should I say had?"
The girl says now fully turned to their directions as she began to laugh "you bitch!" Realising the implications, Ren, much less experienced than his partner, rushed at her shooting, shockingly however she walked through the shots the pain just fueling her as she jumped onto Ren and straddled him as he fell to the ground before stabbing his heart repeatedly with her kitchen knife again and again until he stopped moving
Asahi, now completely set on killing this girl shot her, she recoiled back, her smile never fading as she hit the wall behind her
"Why did you do it?" Asahi asked his free hand clenched into a trembling fist as his face was shadowed with anger
The girl laughed "why? Why? Why? You really think you are special huh? Oh you can't imagine, the screams of your family when I slowly tortured them to death were delightful, I enjoyed every second of their agony before they died" she said before laughing as Asahi shot her in the head without hesitation, but as soon as he did, explosions started to wreck the building, inside the walls, dynamite was linked to her heart, and when it stopped, the dynamite exploded taking her, Asahi, their bodies and anything else in the building and anything within the vicinity with them, as the serial killer The Laughing Calamity otherwise known as Mei Yasha died that night
However...