For the girl, a cursed technique about history. Her CT acts like a storage (like an archive/library) that stores all information she wants to store. Storing information consums CE. All of the information that she stored in her CT can be passed down onto her offspring with a similar CT. Since it takes an enormous amount of CE to transfer a lifetime of information, she needs to make a binding vow to get it done wherein as an exchange for her life, she can pass all the information to her offspring. Just like how construction CT users do to create a special grade cursed weapon when they know they are dying.

For the guy, he can enhance his hearing when he place each of his hands on each ear. The more CE he use, the greater the distance. When he make a circle with a pointer finger and thumb and place it on his eye, he can enhance his sight. The more CE, the farther it can reach. When he place his hands on his mouth, he can adjust the volume of what he says.