Taro in Occult club

As I did in the last picture, I tried to make Mai Waifu my senpai by changing the mod with notepad but it didn't work, it only work with Oka when I use JSON Editor Online so i will make Oka Ruto my senpai. I changed senpai's name to Taro Yamada. As I did in this picture I tried joining the club but I can't so you better not do this when you click info, just join