Can someone help me find this romance manga?

The manga has a character named Yushin (hope i spelled it right) and he hooks up with the popular girl of the school, i think. And she and Yushin start dating, Yushin wears all black clothes. He goes to the mall to get new clothes, when he sees a group of girls getting bullied. He defends them and the bullies get kicked out. Turns out one of the girls is that girl Yushin is dating, she's just wearing glasses. Then both go to Yushin's house to eat. Then they go to the girl's house to meet their parents. They both date happy and don't wanna let go. That's all I can remember.