What to Do About Calcium Deficiency [Cross ABO]

As soon as Duanmu Rui opened his eyes, he found himself in an unfamiliar environment, the sky was so dark that he couldn't distinguish anything.Before I could figure out what was going on, I was dizzy again.When he was awake again, he was forced to move with his family, and at the same time, something unclear appeared in his stomach.What kind of world is this!Duanmu Rui almost went crazy.This article is the world of ABO that has been emptied from history, and all kinds of violations and unreasonable things must not be pursued. 1V1, no change of attack!Content tags: Having a child travels through time and space to meet by fate┃ Search keywords: Protagonist: Duan Murui┃ Supporting role: Fang Qingyin