The Dullahan Surpasses Space-Time
Dullahans are demi-humans whose heads are separate from their bodies. Naturally, Tetsuo is intrigued by the unique traits of dullahans, but Kyouko is just as interested in learning more about her own body. Tetsuo has the idea to ask the opinion of someone outside of his own background in biology, so he takes Kyouko to meet Souma, an old college buddy.
Aired 12/03/2017EP 10 - The Dullahan Surpasses Space-Time

Interviews with Monster Girls
Succubus, Dullahan and Vampire. They are known as Ajin, or "demi"s and are slightly different than the average human. They have lived alongside humans for ages under persecution. However, in recent years, they have become accepted as members of society. This story follows a high school biology teacher who has a great interest in demis and his interaction with the various demis in his school, each with their own cute problems.