If you're looking for anime similar to Kaijuu no Tokage (Pilot), you might like these titles.
Miss Kobayashi is your average office worker who lives a boring life, alone in her small apartment–until she saves the life of a female dragon in distress. The dragon, named Tohru, has the ability to magically transform into an adorable human girl (albeit with horns and a long tail!), who will do anything to pay off her debt of gratitude, whether Miss Kobayashi likes it or not. With a very persistent and amorous dragon as a roommate, nothing comes easy, and Miss Kobayashi's normal life is about to go off the deep end!
Monster Lizard is a cute fluffy story about a woman who encounters a monster girl and her whole life is changed due to this. This premise is also presented in a similar way in Kobayashi's Maid Dragon, where the encounter between a human and monster heavily effects the humans life. The reason I have recommended this one way though is due to the fact that Monster Lizard only touched on this premise whereas Dragon Maid develops this to create a comedic atmosphere. So as a conclusion if you liked this one shot maybe check out the Dragon Maid Anime.
Humanity's battle of many years with the kaijuu, giant monsters, has finally come to an end. Now that Earth has entered an age of peace, girls with the souls of kaijuu have begun to appear, giving them the ability to transform into kaiju. They are known as the Kaijuu Girls, and this is the powerful, transient, beautiful, and at times easygoing story of the strange fate these girls bear.
Anime shorts that offer a secret candid look at the daily lives of Monster Musume.
Welcome to the town of Lindworm, where humans and monsters coexist and rookie doctor Glenn carries out some…risqué medical examinations! Whether probing deep into the gills of a mermaid, suturing the thigh of a flesh golem, helping a harpy lay an egg, or palpating each and every scale of a dragon… No matter how different their looks, bodies, and properties, Glenn devotes his all to saving them—and, in the process, winds up in some pretty dangerous liaisons…? But don’t worry—it’s all just a part of his medical exams!
In a world bursting at the seams with moe monsters and humanoids of the horned sort, which brave heroes will take it upon themselves to review the beastly babes of the red-light district? Can only one be crowned the ultimate title of best girl?
In the rural town of Ayukawa, humans live side by side with monsters of different races. Though they appear to be human, these monsters have special characteristics such as the abilities to change shapes, to grow claws, to blend into walls and many others. Hatoko, nicknamed Petoko, is one such monster from the Petopeto race; she has an unfortunate tendency to, quite literally, stick to those who make contact with her. One day, she sticks to a boy named Shingo as he tries to stop her falling into a pool. During their enforced togetherness, Shingo begins to like her, but Petoko worries about whether she - as a perfectly designed trap for male humans - can ever be truly loved...
After years of war against the monstrous kaiju, the world finally knows a time of prosperity and peace — but the presence of the kaiju can still be felt. Girls with the souls of kaiju are born every so often, and each is gifted with the unusual abilities of kaiju! An organization called GIRLS has collected the kaiju girls to defend the earth, but rising from the shadows comes BLACK STARS, a troupe of evil kaiju girls who just recruited their latest — and somewhat bewildered — new member…