Kyouko Sawai - 澤井杏子

Sister of [Yoshiya](https://anilist.co/character/291627). A full-time housewife. She is newly married, but her husband is on a business trip. She has an excellent sense of balance and often manages rough situations. She has been taking care of her younger brother as a mother for a long time. She is learning a lot about pregnancy and other issues as she is invited by a neighbor as a mother's friend.