"I'm not kissing because it's an experiment. I don't know if I'm going to cry later." My senior's scent is growing stronger... I feel like my senior's sweaty body, red-stained face, and wet eyes are inhaled. Yu Kusakabe is a university student who is enthusiastic about researching androgynous people. After being introduced by the professor, I asked him to become an assistant for Ujo Aritoki, a university student who is nesting in the laboratory, but he managed to succeed in entering the room despite being paid in advance many times. However, I encountered an occasional seizure... Although I was also an androgynous person, I was studying with my own body as an experimental table. Yuyu, who knew that the mucus containing other people's DNA was the most effective in calming an attack, was----!? "Senior, it's ok. I'll be the inhibitor to my senior..."