Responses
Unfortunately author said it's never going to happen because both of them are alpha, and getting pattern is possible only if pertners are alpha and omega
The author answered this on creater's note ch.
Q: Will the two ever have the same mark on their bodies?
A: If Colton and Jinwoo make an effort(?) the locations of their tattoos could change. The scar shapes won't change since they're both alphas, but they'll change to something only they'll recognize.
WHEN ARE THOSE MARKS GOING TO CHANGE OMFG I NEED IT NOW