Kajiwara Akina

An art teacher with big tits, a bit of a moron, and has been trained by the main character.

She was the protagonist's junior in her school days, and they met again as teachers at the same academy.
Time has not waived her loyalty and she eagerly swears to be a slave again.

She is cheerful and earnest, but is also a bit of a ditz, and is seen as a friend by her students. She often makes a fool of herself in front of the main character, and is often made fun of for only being useful due to her tits.

However, she is surprisingly skilled at gathering information, probably due to being in the newspaper club as a student. She often obtains useful information for the protagonist, and when she does, she often begs him for a reward.