How about Hanzo branding tattooing fem!SO. Maybe after the SO escapes and he wants to take extra precautions to keep her his. If you feeling it it can be noncon too but you probably have a bunch of noncon request so I don't mind if you don't make it noncon.(I love your blog btw)
It wasn’t the first time you had been able to escape from his grasp but Hanzo was determined to make it the last time.