Is this Your First Death Metal Siren?

"If this is a dream, please let me enjoy it for a little bit longer!"

A part-timer by day and death metal singer by night, 'Serin' receives an official debut proposal one day and believes that she can finally have the future of her dreams... But instead, she ends up transmigrating to the mobile game she can't live without: The Kingdom Dalencia Far Far Away!

After being attacked by a slime then saved by her favorite character 'Siphon', she realizes that she has become an incredibly powerful siren.

Unable to control her powers, Serin brings down a kingdom and saves a small village from monsters. But her beautiful and merciless voice brings all the "John Doe's” to her...