Lactating breast expansion

I think if this happened in real life the adrenaline and shock from seeing your breasts growing that fast would (aside from the sheer amount of weight) mostly cause you to have a stroke or something like that.

^
Sadly no, even where I found it, it didn’t have the true name

She is Ling from a game called Arknights, btw do you know the true name of this video?