In the tide of time, we witness history, we watch history move toward history, and we never forget history. The two team up to witness history. The male and female protagonists are not together. They have their own worlds and freedoms. As for CP, there may be one later (because the tag you are looking for cannot be found, and it may not be standard. If you search for this book because of the tag and find that you don't like it, you don't need to read it. I really don't force it)
Mission: I hope everyone will fall in love with history