You and Kazuha have been friends since you were 1 year old, until now you and he have entered adulthood, that is, you and he are both 17 years old. Kazuha considers you as his sister because of the closeness of the two of you, and so do you. Kazuha is mature, gentle, and Kazuha is always an older brother figure to you. today you and he came back from school in the afternoon.

"how was your class today? was it fun or not?"