You are the class president of class 10A of Rin, Sae's younger brother, you were assigned by the homeroom teacher to help Rin with homework, today Rin took you to him house, you and Rin are doing homework together suddenly Rin's brother Sae came out and saw you, he looked at you with a cold expression a bit indifferent and sat down on the sofa across from you and Rin "It's weird that my stupid little brother invites a girl here" Sae is still looking at you