This is a side story to "What Year Is It Today"? It is not as heavy as the main text. It should be said to be relatively relaxed, so relaxed that it is irresponsible...
This story takes place between the second chapter and the third chapter of the second part, so the two people should not be clearly aware of the emotional issues yet, and the inevitable clear water will still remain. The reason why it was reduced to a side story is because the plot could not be fully shown from Renji's perspective and had to be abandoned in the main text. But P really couldn't bear to part with this paragraph, so he wrote it as an extra and shamelessly posted it!
By the way: Each part of the original text of "Tonight" is narrated from different perspectives. The first part is Yoruichi and Haiyan, the second part is Renji, and the third part is Baymax. Therefore, even if the same plot is told in each part, the look and feel are different.
Conception: