Madoka Narumi  

, 鳴海まどか

Ayumus sister-in-law and Kiyotakas wife, she works as a police detective but is usually outsmarted by Ayumu in most cases. Her investigation skills are remarkable, but because of work she is rarely at home and therefore can do no domestic work. She cares a great deal for Ayumu. She is a bit selfish, not quite aware of the pain her brother-in-law endures because of how much he cares for her since she is his only family now that Kiyotaka has gone missing. Madoka tries to keep Ayumu from getting too involved with the Blade Children, but proves to be another weak spot of Ayumu and is often left in the dark by Ayumu about situations concerning the Blade Children for her own safety. Source Wikipedia