Yuuhi Aogiri

Suzumi's brother-in-law, the adopted younger brother of Suzumi's deceased husband. Early within the series, he wears a headband enhanced with tennyo magic made by Suzumi which helps to designate him as Aya's bodyguard. Yūhi has unrequited feelings for Aya. Though attracted to Yūhi, Aya ultimately comes to see him as a close friend, and Yūhi is able to accept the fact that Aya only has eyes for Toya. A notable martial arts expert, he is also an extraordinary cook. (Source: Wikipedia)