I Long for a Brave Man, but All My Teammates Are Female Demons?

Original Kamen Rider novel➕Multiple heroines➕Cthulhu Mythos➕Japanese fantasy➕Monster Girl) Bai Zichu traveled to a terrible world and spent fifteen miserable years Until the reunion with his sister broke his fate again, but what followed was that his sister was killed by a mysterious organization calling itself Shanhaihui. But he was also parasitized by the mysterious biological weapon [Black Tai Sui] left by his sister, and he had an evolutionary system that transformed into an armored monster. Unexpectedly, the huge consumption caused by transforming into a giant still made him faint, and he was taken to an ancient mountain prison by a mysterious organization. He was coerced into teaming up with the evil race "Demons" who invaded the human kingdom, and was forced to go down to explore the ruins of an ancient and dangerous super-ancient civilization. But his teammates are made up of classic elements such as spiders, bats, dinosaurs, foxes, and slimes. Even the colors are wonderful red, blue, yellow, purple, and black. As a tokusatsu chef, I have to lament that this configuration is just like a weirdo in a tokusatsu movie. In order to survive, he had to establish a good relationship with the female monsters, but in the process of gradually breaking up, he discovered that each of them had the same huge psychological trauma as his own in the past, and also bore the same cruel fate of not being accepted by the world. Being deeply influenced by the hero tokusatsu, I can never leave the weak alone. But in the process of deepening the bond, he discovered that the girls seemed to have heavy feelings for him. But I already have someone I like. This is an ordinary story of a team of "marginal people who are not accepted by society" growing up, helping each other, and seeking happiness during the adventure.