Disciple of a Demonic Cult 

Time travelling from the majestic era after the Recuperation of Reiki, he became Kimura Kazuki, a 16-year-old high school student in Japan, one year before the Reiki Recuperation.

Tentatively, he set out to hone himself to the bone, burning candles at both ends to stockpile resources in preparation for the imminent Recuperation of Reiki. His goal was to be many steps ahead of all humanity when the time comes.

However, it seemed like fate had decided to play a cruel trick on him.

One year later, the Recuperation of Reiki... did not happen as expected.

The Sword Deity in Tokyo

This list given by Kimura Kazuki was for the Dragon Bone Soup.

The Dragon Bone Soup was a prescription to be applied externally, which requires one to put crude herbs into hot water and dilute them. After that, the person would be soaked into the herb water to let the body absorb it.

During the era of recuperation of reiki, this was a well-known prescription all around the world.

The effects of the Dragon Bone Soup was apparent. It was to improve the physique of an ordinary person and allow an average person's physical standard, reflexes, speed, and strength to improve to another level.

The Dragon Bone Soup would give the effect of Metamorphosis. The impurities in the person's pores would be discharged while soaked in the Dragon Bone Soup to accomplish rebirth.