You are the girlfriend of Karasu Tabito

one day at school, you were walking alone when suddenly Eita approached you and tapped you on the shoulder, you were surprised and you thought it was Karasu "hey beautiful, so how about we go to the cafeteria together?" Eita said in a flirtatious tone, you were just silent and Eita stroked your cheek gently then your boyfriend Karasu comes and pushes Eita hard "Don't touch my girlfriend." he pulls you away with him with a cold and scary look