Included on a DVD within the limited edition of the manga's volume 17. 

Apo, the pet dog from the manga, will star in the anime.

The fourth series, The Bloody Karte (presented as a side series on the DVDs) is a set of 12 stories about Catherine working in a mysterious hospital.

The third series, The Last Train is set with 26 stories during a bizarre train ride that Gregory embarks upon. 
(Source: AniDB)

The second series, The Second Guest is similarly set with 25 stories, except this time the main victim is a woman who has just taken a taxi home from her best friend's wedding ceremony.

Based on the online mobile phone otome game "Sengoku&#9734;Paradise". 
The first 3 minutes of the 10 minute spot for Sengoku&#9734;Paradise Kiwami is the anime. The rest of the 7 minutes is of Sengoku&#9734;Paradise Kiwami cast members Daisuke Namikawa and others (first time with Tetsuya Kakihara, second time with Rei Mochizuki) going on missions, plus an informative short.

The school has 26 students with each name of them beginning with a letter of the alphabet in order and a color, 3 teachers, 3 classrooms, a library, a cafeteria, a music room, a playroom, a fountain, a skeleton playground, a graveyard and several school staff. 
(Source: Wikipedia)

The first series is a set of 25 stories about a male businessman arriving at the hotel after taking a train home from work. He encounters the mysterious owner of the hotel, an old mouse known as Gregory, who suggests that he stay a while. Soon, the man becomes drawn into a bizarre series of events taking place within Gregory House as he tries desperately to escape from this bizarre purgatory. 
(Source: Wikipedia)

Milky Cartoon