The contents of the letter were as follows:
(<> indicates Orochimaru's inner thoughts while reading the letter.)
Hello, me from another world.
Being temporarily unable to meet you is truly something both anticipated and regrettable.
Let me guess—you must not be doing well in your world.
When he saw those words, a different light appeared in Orochimaru's eyes.
As he continued reading, Orochimaru understood why his counterpart from that world had said so.
Yato-kun often helps me here, but I suspect there is no Uchiha Yato on your side.
It was precisely that judgment that left Orochimaru himself somewhat bewildered.
<How did the me from another world determine that Uchiha Yato did not exist in this parallel world?>
You must be rather confused right now. Why would I make such a judgment?
While Yato-kun brings many imaginative ideas, he also has some novel tools.
When I learned that he possessed the ability to travel through time and space, I knew he was special. He was different.
I do not believe that an identical person also appeared in your world, so I believe he is absolutely a special existence—or rather, a unique one.
I am honored to have received Yato-kun's help, which has made both my experimental projects and my life far more colorful.
I do not know what state you are in now, but believe me: as long as you follow behind Yato-kun, your life will certainly become even more exciting.
By this point, Orochimaru had already believed what was written in the letter, as well as Uchiha Yato's story.
The rest of the letter mainly described the ideas Uchiha Yato had provided Orochimaru in that other world, along with some of the progress of his experiments.
Orochimaru himself knew very well that his counterpart from that other world might