Mio Suzuki is a meek and clumsy girl born in 1989 who fell in love with Wataru Kurenai after they meet at her previous job at a restaurant, where she was fired for being clumsy. However, her encounter with Fangires reveal that she is actually Maya's successor to the title of Queen of the Checkmate Four and the future bride to Taiga Nobori, donning an anklet from Bishop to complete to her full transition into the Checkmate Four. Though in charge of killing traitors, which she has been reluctant to carry out, Mio is given the additional task of killing Kiva to protect their kind from him. Though she was unaware that Wataru is Kiva at first, still having feelings for him in spite of being forced to marry Taiga. After finding Maya and learning she can't rid herself of the title easily, she adm