Lena. In 2022, the program invited Lena, a senior tutor who won the European Song Championship on behalf of Germany on 20 10, to come back to help. Lena, formerly known as Lena Fujii, was born in Tokyo on July 2, 1984. She is a Japanese female model and singer. With her lovely and sweet appearance and always kind and sweet smile, Lena has won a high popularity in Japan and abroad.