Ayakashi wa Shousetsuka ni Koi wo Suru

Aka, a novelist, has been able to see ayakashi since he was little. Because of all of the ayakashi around him, Aka did not get along with humans. The only one who stayed around him was his now deceased dog, Shiro. One day, he meets an ayakashi that looks similar to Shiro. This ayakashi, Rintaro, is