Sera Fuki

The protagonist of this work. A sophomore at a local university, majoring in education. He lives in the house next door to Ui's, and his her childhood friend.

He has spent many years dealing with the shy Ui, who lacks self-confidence, and has developed a patient and caring personality. Because of this, he is often described as a good-natured person.

He has strong convictions that allows him to help others without worrying about public perceptions, and it is this kindness that has made both Ui and Seira like him. He is vulnerable to push and tears from girls.