Help please

Days ago, I was reading one yaoi but I dont save in my fav mangas and I can't remember the title. The story is about a college professor who has to host a stranger, this stranger is from an isolated tribe, this guy goes to Japan to learn about the world and he and the other guy obviously start to like each other. sOMEONE PLS, KNOW THIS STORY, I DONT FISINISHE READING AND I CANT' REMEMBER THE TITLE T____T pls, help me... ╥﹏╥