>>529754476
This is what TW have, which again, is standard in hoyo games as well:

MTL (but the important part is the 0.8% and 1.8% figures)

"In this "Youjima's Equation" contract, the probability of obtaining five or four stars is as follows
down:
+The basic probability of a five-star character is 0.8%, and the comprehensive probability (including guarantee) is
1.8%;
+The basic probability of a four-star character is 6.2%, and the comprehensive probability is 13.12%;
+ When Chang Chunyo gets a five-star role, there is a 50% chance that he will be a five-star role in the current issue.
"Hashimoto Mayumi".If the five-star role obtained in this spring appointment is not the current five-star two
UP role, then the five-star role obtained in the next appointment must be the current five-star UP role
color."

Just mysteriously gone in SEA and global (and maybe JP)