Gintama fanfic.
The main direction is silver and cinnamon, with high osmanthus and green onions. CP is messy…
The title is taken from the "Shen Nong's Materia Medica", which says: "Medicine has the combination of yin and yang... There are those that work alone, those that have beards, those that are messengers, those that are fearful, those that are hateful, those that are opposite, and those that kill each other. All these seven emotions should be considered together."
Someone said. The first love will determine the love of a lifetime.
He doesn't deny it. None of them deny it.
But when and where exactly that happened, perhaps no one knows.