The second season, Shin Kanpai Senshi After V is still airing in Japan. To those who are unaware, the said series parodies Super Sentai and other tokusatsu tropes. What's interesting is that two of its cast members once played Kamen Riders. These actors are Kazuki Kato (Kamen Rider Drake) and Ryota Murai (AU Kamen Rider Kuuga).
[Source: Tokusatsu Network]