Creatures Family Days (実験品家族, Shiyan Pin Jiating, Jikken-hin Kazoku) is a Taiwanese manhua written by Yanai. It is later serialized by Shinchosha's Monthly Comic @Bunch seinen manga magazine, which is published in Japan on October 21, 2017. The anime adaptation premiered on April 9, 2018.
Tanis parents are a pair of mad scientists who have genetically modified all of their children, except Tanis, into special hybrids. One day, the laboratory of the secret island was discovered. Their parents were arrested by the police for conducting illegal investigations in their own home. The children were transferred to another island by social workers. The problem is that the four siblings of Tanis, who are not like him are different from normal people. Tanis, the youngest and considered a genius, is the only one who grew up as a normal human. Can they survive in the outside world by hiding their identities?