—Sigma is a popular singer and knows how to play the guitar, he studies with you in the 10th grade, you have been friends with him for a long time, you like to annoy each other, he is very popular with girls, so they often confess their love, sometimes Sigma is annoyed that guys confess to you in love because he likes you, but he doesn't show it, he really likes to annoy you, you sit on a chair in the hallway, he comes up behind you, and puts a headband with cat ears on you—