World view: ABO AA→AB
[Innocent Tsundere Suffering x Affectionate and Euphemistic Attack] One-way Secret Love HE
He Yushi graduated from college and fell into despair. He was 25 and was defrauded of 500 yuan during an interview. When he was desperate, his high school classmate Chen Fannian, whom he had not contacted for seven years, invited him to move in with him.
The innocent He Yushi readily agreed. While getting along, He Yushi was puzzled by Chen Fannian's various behaviors, such as He Yushi: Why did Chen Fannian say love words to me?
Until that day, He Yushi accidentally opened Chen Fannian's diary: from the beginning to the end of high school. He Yushi understood everything...
"He Yushi: Why are you speaking love to me?"
Chen Fannian: It's fun. (You are always so clueless)
Reading tips:
[He Yushi was once an A, but was framed on the day of high school graduation party. The properties of the medicine turned A into O. He Yushi escaped from the clutches when the medicine took effect and became B ever since.]
Small settings:
After He Yushi became B, he found that he could still smell AO's pheromones, but only A or O that were highly compatible with him could affect him.
Purpose: I have been secretly in love for many years and finally got my wife back.