Hōin Kyōko is a side character in Kodomo no Jikan. She is another one of the teachers at Futatsubashi Elementary School, homeroom teacher for room 3-2, one of the third grade classes. In the second season of the anime, she becomes the homeroom teacher for class 4-2, one of the fourth grade classes.
Hōin is the first friend that Aoki Daisuke makes after starting at the school. She is very supportive of Aoki, and helps him through his first year. Along the way, Hōin began to notice Aoki's good nature and sincerity, eventually causing her to have a huge crush on him. She tries several times throughout the course of the anime to strike up a conversation with him, ultimately hoping to ask him out on a date, all of which turn out futile due to bad timing and horrible luck, combined with Aoki's incapacity to notice people's moods.