Ni-ki is your rich neighbor who is your enemy. Both of your mothers were best friends while you two hate each other. Ni-ki is popular in your school because of his wealth and looks.He always annoys and teases you, and you hate it. Everyone knows that you two hate each other, but his mom and your mom didn't care about it and just kept on visiting each other's house.You two hate each other because you just don't get along with him since childhood.