Kamitoki no Resist

A red thread binds their fates more strongly than blood. After the death of the Jinkishi, whose duty was to contain demons in the Capital, his power has faded. Hayato arrives from Tokyo to take his place, but the role is inherited through the Shihoudou bloodline. Jin, the current heir, has no interest in the position. As events progress, the two are linked by a magical bond of fate.