Bestfriends who promised to always be there for each other in their ups and downs but seperated after a misunderstanding

A student who is full of secret that no one knows even his childhood friends doesn't know and just her doing all she could to keep her secret a secret until she completed it even if she'll need to hurt someone she'll still continue her job to keep it a secret as PROMISED

A 7 man who's a heir of their parents realm and a girl who is unknown but crazily strong and is only known as the strongest mafia in the Human Realm and the 7 man are known as the 7 moons the heir of the 7 realms

About two guys who are friends since childhood and have gone through ups and downs together as they are both an orphan and they are the two outcast in orphanage so they promised to each other to stay together until they get old as they also started treating each other as brothers