Sibling love.
The heroine is five years older than the hero, and their grandparents were neighbors. The hero had seen the heroine in photos when he was a child. At first, he had been looking forward to meeting the heroine, but he always missed it.
It wasn't until the summer vacation of the second grade of junior high school that the male protagonist saw the female protagonist who was already in college at the door. However, by then his mood had changed. Many years passed by, and by chance, the heroine met again when she was helping her best friend teach. Then the heroine also knew who the hero was.
After the male protagonist kissed the female protagonist and was ignored, he waited for a year until the college entrance examination was over. After expressing his feelings, he finally got the person he wanted, and then began the stumbling daily (sweet) and regular (honey) love pattern.
The heroine has a more casual and calm personality, always smiling, but she is very smart and knows her position and her choices.
"I just think about you and love you at the same time."
The story of a boy who finally marries home the girl he loves after so many years.