This should answer your question. :)
https://i.harem-battle.club/images/2018/05/01/JOO.png
Nice to see the 12 squad sets unlocked, I can finally prepare a squad for each nation.
It has less meaning now that those missions accept other knights as well, but still the more bond crystals the better.
By the way, they added a third possible bonus result of a mission, besides a secret garden or a boss fight.
I've just got it now - it seems we get an item directly to our box after a message in yellow appears.
I'll need to look into it in more detail, since I didn't really find anything unusual in my box afterwards.