If you're looking for anime similar to Family Secret, you might like these titles.
Meeting up with the members of the junior high school tennis club after many years certainly brings back memories, after hearing about what each of them became. For Tatsuya, it is a perfect occasion to find out which girl secretly cheered on him, putting flowers in his locker. Through dates and shopping with all of the girls, the careless boy breaks countless hearts, while trying to uncover the truth. Will he be able to find out who his secret admirer was? Who will earn his heart in the end?
Masquerade is the story surrounding the Hiraga bloodline in which Gen is a part of. Recently orphaned, he moves in to his grandmother's house and unwittingly triggers the Hiraga clan's curse in which nearly every member leads a tragically short life. In his grandmother's house, Gen begins to unravel vaguely remembered memories from a dream he's always had. With the help of an American graduate student, they try to uncover the secret of the Hiraga bloodline, the whispered legend of immortality that is locked in his genes, and a way to keep Gen from sharing the same fate that every one of his ancestors before him has suffered.
Follows Shouji Fujimoto, a widowed single father who aspires to be a picture book author, encounters Minami Takasaki, a singing idol on the children's educational show O-nee-san to Uta-ou! (Let's Sing Along With Our Songstress!), outside work. As a television idol for children, Minami is lonely in her private life and is not allowed to fall in love. Any scandals are absolutely prohibited. Thus begins an adult love story with a songstress.