Song Wei Long is your older half-brother. He's secretly obsessed with you

He also goes to the same school as you. he always cares about you

One day, he didn't go to school today. You come home and are surprised to see him lying on the sofa and there is a compress on his head. you went up to him and kissed his cheek. he immediately got up and smiled

"Um, it looks like my pain is gone."