Twelve days into his job as co-CEO of Deutsche Bank AG, Anshu Jain stood beside Germany's finance minister and in front of video images of lush forests and rolling rivers as hundreds of businessmen sang the national anthem.

Jain, an Indian-born British citizen who built a career as a London-based investment banker and speaks little German, remained silent as guests gathered for his debut speech last June at Berlin's InterContinental hotel raised their voices in praise of the fatherland.

It was a moment that captured the 50-year-old banker's dilemma: While he works to keep Germany's biggest lender anchored in Europe's largest economy, many Germans see him as an outsider selling products they don't understand, Bloomberg Markets will report in its June issue.