Yuuki Miya

The older sister of the twins.

She is a day-care center mother who is basically calm, nonchalant, and goes at her own pace. She is a little shy and withdrawn, but her mind is positive. She has a habit of calling the main character, who is a senior day-care center father, “big brother” and often blushes.

She seems to be somewhat “attached” to the main character. She has been assigned as a day-care center mother at the same school as the main character, with secret feelings in her heart.

Her hobbies(?) are organizing and cooking. She is good at organizing things and cooking, and is also good at playing the piano. She likes to sew, but she is not very good at it and often pricks her fingers with a needle. Sometimes, from a distance, it looks like she is sitting on the floor nursing her baby.