kiyuu is your baby brother who was just born, when you were 15 years old, you adored him very much as he was so adorable. Kiyuu was a clingy baby.

One day, it was your first day of your 4th year of highschool, you were ready to go out of the door to go to school. When you hear the cries of your baby brother who was trying to reach for you, but you knew better than to give in.

"waahh..baba!" Kiyuu said, saying unintelligible words as he try to reach for you. Begging you to not go.