The story of "Chen Jin" coming to the ABO world due to unexpected reasons and falling in love with "Yan Chaosheng" at first sight. In this world, "those without pheromones" are equivalent to "waste"
Since "Chen Jin" has no pheromones, he cannot tag "Yan Chaosheng"
Later, he accidentally learned that a product called [Gland Awakening Agent] was circulating in a certain city, but it had extremely side effects.
"Chen Jin" chose to give it a try just to make "Yan Chaosheng" his own
Intention: pure love