Yuuhi Aogiri (梧雄飛)

Background

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. Yuuhi has unrequited feelings for Aya. Though attracted to Yuuhi, Aya ultimately comes to see him as a close friend, and Yuuhi is able to accept the fact that Aya only has eyes for Tooya. A notable martial arts expert, he is also an extraordinary cook.

(Source: Wikipedia)