Who protects Saint are weird, I mean she is one of the contributing MCs, becoming a Slave and even goes to dangerous places. It like sending to death sentance and you can joke saying she blameless, also she fricking SAINTESS every word she said becoming evidence for people to trust meaning her...
Mob Otome MC have something to back him, currently, this MC doesn't have any backup heck he just arrived unlike Mob Otome MC he has a lot of time before joining the main story (School Arc)
I'm pretty sure he did more thou... In his previous life, he protected his woman from a Hero who wanted to destroy him without caring about the people around him
More like if they want monopolize him, they need kiss that mark. Well it just temporary, probably can use to have their privacy but still unfair because higher demon magic is higher the more privacy they have