Spy x Family is an interesting series that takes place in a world war 2 like setting. One country is still starved for war, so the main protagonist, who is a spy, attempts to infiltrate the country and live undercover. However, in order to do so he has to live a normal family life at the same time.
This spirals into him looking to adopt a child, and when he goes by the adoption center, a certain somebody notices him. This child, happens to be telepathic, ergo, she can read minds. After reading the spy's mind, she decides to want to live with him, in order to be entertained.
Later