In both the anime world it combines elements of the medieval building, the elements of modernity and magic. Both series are devoted to the art of chivalry. The main male heroes defending their favorite girls and friends.
We have both protagonist who are generic losers who had their precious big metal thing lost and they are sad without it. Now they try their hardest to get back their precious big metal thingy.
The male protagonist is also very similar to female loli protagonist in Lance N' Masques. They're short, kawaii ~ and has nice big round faces; making them the most likable/lovable characters you'll meet in anime history.
Yotaro/Hayate must serve Makkio/Nagi. He is her bodyguard. Both Makio and Nagi are being targeted. A whole cast of characters come live with Makio/Nagi at her mansion. Both are a slice of life, comedy and some action.