He used to be in a band Giselle but the keyboardist who is also his girlfriend threw him out. His job offer was also revoked. Poor guy became a neet until one day he mistakenly entered a children's show job interview. There he was given the job as a singing partner in the show. Through many mishaps and whatnot he learnt the important things in life and soon realised that this is where he belongs and from there he became a popular icon among kids.

2) QED Shoumei Shouryou : It's about this really intelligent Japanese guy from America who came back to Japan to study in a school there and how he helped to solve strange cases.
This guy from came back to Japan from America is really smart and uses the phrase QED whenever he solved a problem. He met this girl who happens to be a detective's (in the police force) daughter. From there because of the girl, he gets entangled in many strange cases where he lend his strenght to solve them. There is a bit of romance but it's sweet high school romance so it's pretty not bad. But I personally like the three "detectives" from the so-called DETECTIVE CLUB. They are a bunch of detective fanfantics. Really humourous to watch them.
3) Himitsu no Hanazono : It's about a family of four siblings who apparently makes-up the manga artist Hanazono Yuriko.
They hide their real identity and lives according to it. They draw manga for a living and after their success live in a mansion. But like every family there is a hidden secret. It all starts when this girl, an editor, who got fed up with her life and wanted to quit her job got assigned as the manga artist's editor. From there mishaps happen and somehow the identity of the manga artist got revealed and all hell break lose. This one ends happily like any other show.