Encore ga Sankai (1985)

Encore ga Sankai

Popular singer Yoko Nito is secretly married to Rui Fuwa, her talent manager, but only the company president and her family know about it. Being a top artist while making an ordinary family with the love of her life will be a difficult balancing act. Yoko is determined to fulfill her promise to Rui Fuwa, to become a singer whose encores will continue to echo long after the music is over. Finally, at her first major concert at the Budokan, she finds her own answer.

(Source: Mangapedia, translated)