Yunho is a band vocalist with an unrequited love for his friend for 10 years who just found out his friend might be gay but also realized his friend had already fallen in love. In his despair, he walked out on his friends with a lame excuse, cried while ran, and bumped on someone. However, this someone was a spirit guide on incognito, supposedly unable to be seen nor touched. Furthermore, Yunho has left a familiar scent on Hanwool, the Tiger spirit.
Turns out, even Yunho's unrequited love, Kyunhoon (who can see spirits), has fallen in love with a weakened spirit guide and was gifted to not see the spirits by Hanwool as thanks of Kyunghoon's aid towards Naroo, the fox spirit. And Yunho, who wanted to check on his "rival" to make sure Kyunghoon does not stray from Yunho, finds himself entangled with Hanwool instead.
Their love-hate relationship slowly turns complicated once Hanwool realizes Yunho's past and the burden of Hanwool's hatred for humans. Not only that, the scent which ties him so closely to Yunho turns out to be the same as the scent which surrounded a butterfly whom he loves decades ago called Yun or Destiny.
Regardless, the two confront each others insecurities, pain, and other burdens. Until Hanwool's power during Summer's Soltice made the gods tremble and hoped to have him separated from Yunho
Biting the Tiger