I Became a Siren, Crashing into Marvel?!

'''What do you mean the white-haired girl I became isn't TB but Observer Zero from Antix?! And not even in the Azur Lane world? But in freaking Marvel?! (Azur Lane × Marvel, male-to-female transformation, no system, author’s background is complex, focusing only on Marvel Cinematic Universe plotlines, no comic or TV show settings, apologies for any possible OOC, thank you) This book is sponsored by Azur Lane and the Crimson Axis…'''