If you're looking for manga similar to Jinrui wa Suitai Shimashita: Heijou Unten (Light Novel), you might like these titles.
When Futaba Yoshinaga won a gargoyle statue from a lottery, she had no idea that the inanimate object was actually a sentient talking being! Named simply Gargoyle (or Gar-kun), the statue decided to protect not only the Yoshinaga family, but the entire town of Goshiko. With a variety of characters trying to prove their superiority over Gar-kun and the wacky inventions of his crazy creator, Iyo Takahara, at every turn, it seems that life for the Yoshinaga family will never be the same again!
Elcan is a low-ranked dark mage who gets banished from his party due to his inability to use offensive magic. Not knowing what to do next, he wanders the streets of town until he finds a pair of twin babies who had been abandoned by their parents. "I couldn't become a prominent dark sorcerer, but I at least want to bring these two happiness." With that thought, he retires as an adventurer and decides to raise the two girls, whom he names Selena and Corona. Years later, the twins have been raised into fine young women, and are ready to leave their father's nest... Or so he thought! "Father, we have become S-rank sages." "So, Daddy, please form a party with us!" Before Elcan realized it, the two had become known as the "Legendary Twin Sages". Thus begins a new adventure between a father who longed to be a dark mage and his twins who became living legends!