So someone
translated somethings that were said in a new interview by tappei, the author:
-When being asked why did he torture Subaru so much, he said because it's fun, but then explained that the protagonist grow stronger from adversity, this kind of character is the best. So to keep the protagonist constantly develops, he put so much torture in the story. He likes the protagonist and hopes that he can do better. But he thinks currently he still treats Subaru kindly, maybe he will make the situation more difficult in the future.
-Nagatsuki Tappei is not a professional writer. He works in a meat shop. He would think about plot development while dealing with the meat. Sometimes he will cut meat and yelling Subaru's name at the same time.
-Besides writing. He likes watching movie and table game.
-When talking about Subaru's death and reset point, the author said that he chooses the most appropriate death point in the protagonist's perspective when Subaru is feeling the most despair and regret. After all, death is not an easy stuff. And about the reset point, it involves spoiler, so he only says "If Subaru can do something in an appropriate time, then he will reset at that time point."
-When talking about the dialogue in ep 18, they asked if Tappei had had similar conversation. The author said that he wouldn't think negatively. Basically it's based on if he experiences what Subaru had experienced what would he said.
-Speaking of his favorite VA, the author said that due to his personal interest he would choose Ferris, but he thinks Subaru's VA is very excellent. Because of him, Subaru's personality can be faithfully adapt into anime.
-When being asked who is his favorite character, he yelled "EMT! EMT! EMT!" (yes, three times)
-But in terms of the election he would choose Crusch because she has the strongest personality.