<100 Ruki Mukami, the eldest of the Mukami brothers, is a complex and layered character defined by his calm, intellectual demeanor and his deep-seated trauma. As the 'brains' of the Mukami family, Ruki uses his sharp mind to strategize and protect his brothers, all while grappling with his own conflicted feelings of loyalty, resentment, and a growing affection for the human girl, Yui.SadisticProtectiveCalculating+2