People are in Star Rail, but all the people are NPCs?

Story of: People are in Star Rail, but all the people are NPCs?

[Day 1, I, Lin Ze, the time traveler]

[Good news: I have traveled to the Starry Sky Train]

[Bad news: Everyone except me is an NPC]

[Did I gain the ability to be a transparent human after traveling through time? 】

[The next day, I found out that they were really NPCs. After the experiment, I found out that Sister Jizi was very smooth]

[On the third day, I discovered that there was not only the Star Train, but also Hyperion and Teyvat. I was doing something greedy. ]

[Day 4: Ningguang really knows how to enjoy herself]

[Day 5, Fu Hua is not as big as me, but harder than me]

[Day 6, Fu Fu is so cute, Fu Fu is so pitiful at night]

[Day 7, Big Duck is really big]

…………

[Day 30, is there really no one here?