He starts out finding himself a regular member of the Sky Ring Clan? And, to make matters worse, the robin's cousin without blood ties.

This is such a perfect start! As a transmigrator, of course I have a system, but what's with this damn system just abandoning a library from a time when humanity was shining like stars and running away?

(I'm too lazy to think about anything else, let's just read the main text (XP))

[Semi-invincible, single female lead (impossible), contains OOC elements, please do not be offended if you dislike it.]

Su Tianling transmigrated to a world in chaos. After experiencing two endings, one from the previous civilization and the other from the current civilization, he thought he was finally free. However, the system made him transmigrate again.

"I can accept being transported to another world, but why am I sharing a body with this white furry ball?!"

"Su Tianling, I'm counting on you. Please help me with the other me."

"Yes, yes, okay, I'm coming right now."

"Tianling, can I really go back to everyone now?"

"Trust me, you can definitely do it."

"Thank you, Tianling. You're so good to me, always there for me."

"Tianling, you haven't fallen for me, have you?!"

"Su Tianling, you lied to me... You clearly said that you would always be with me."

There might be knives, but probably not many; there's more sweetness than anything else.

After the Great Collapse, the year is 2029. The stargate opens wide, and the "Celestial Beings" draw ever closer. Welt and Void Archives pass through the stargate and arrive at the "Celestial Beings'" base. The base's data reveals information about another universe. Why does the person in the data look exactly like Himeko? Even though Himeko Murata is already...

After learning the information, Kiana decides to follow Welt to another universe to stop the "Celestials".

The timeline is from the end of the official comic, Away from Home, where Welt travels to the Star Iron Universe.