Title of shoujo manga

I literally just read it yesterday but I lost it. It's already completed, about a female ninja employed by mitsuhide akechi to protect Oda nobunaga. Disguise is her forte and she pretends to be Mitsuhide's sister called Kikyo. It's a reverse harem and the art is really pretty. Her first meeting with nobunaga is also pretty funny. She found a frog in nobunaga's sleeve and put the frog back to the pond without batting an eye. Help me?