These are standalone adult films rather than episodic TV series you would find on networks like NHK, Fuji TV, or global streaming platforms like Netflix. Context in Japanese Entertainment

If you are looking for legitimate Japanese drama series with high-quality storytelling and professional acting, you can find them through reputable databases and platforms:

JUQ-779 Bercumbu Ibu Tiriku Genre: Drama, Romance Release: 2020 Episodes: 10 episodes