Which novel was adapted into a manga that abducted an emperor back to the modern world?

I'm not sure which manga or manga you're referring to because I don't know what the imperial side is. If you can provide more information, I will try my best to answer your questions.

Abduct the Emperor to the Modern World was a web novel. The longevity flower in it did not exist in the real world. In the novel, the longevity flower was a magical plant with unlimited growth and vitality, which could make people young and healthy forever. This magical plant was regarded as a magical item in the novel with supernatural powers. However, in real life, there was no scientific evidence that the longevity flower existed or could make people forever young and healthy.

The manga 'Defying the Phoenix' was adapted from the novel 'Defying the Phoenix'.

This manga was created by the Japanese manga artist Akira Toriyama and was later adapted into a novel of the same name.

The manga was adapted from the novel Inuyasha.

The Hundred Refined Gods manga was adapted from the novel Battle Through the Heavens.

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