Toaru Majutsu no Index: New Testament - Volume 12, Chapter 1: Steamed Buns and Diamonds — to_the_DIANOID.

A former sporting rifle shooter genius transforms into the ‘Juvenile Butcher’. While originally supposed to have received the death penalty, he was instead fortunate enough to have entered a secret and highly regarded armed force, throwing himself into the ‘Nirvana Project’.

After a period of 10 years, he now has time to freely recover. Having trained until he had excellent military and martial skill, he sweeps through various military districts and returns back to his hometown. Under the monitoring of a beautiful female cop, he re-establishes his family’s bodyguard service, protecting beauties and moving unhindered, his achievements causing the fame of his outstanding, god-level bodyguard service to resound across the world!

- Description from Novelupdates

[Can the devil’s music bring happiness to the world?]From Jimmy Hendrix to Rachmaninoff, all the historical musicians who he meets in his dreams.The devil that presents itself as a little boy in love with singing.The devil’s blessing, given to such a tiny child.In the blessings of many devils,The boy’s song for the world begins.

An Extra is a minor background character with little to no influence on the main story. Their purpose is to fill out scenes and represent the larger world in which the story takes place.Yet,One Extra defied its existence. One Extra destroyed the story.********Luke, an editor, was transmigrated into the story with one goal:“Kill The Extra.”

Yang Ye’s entire family relied on him to keep them safe, but just when everything seemed to be going well, misfortune struck in droves!