All the Girls in College are Ex-girlfriends, and One of Them Has Become a Stepsister

[All-girls chasing a husband: a crematorium + relaxed daily life + youthful campus life + Shura field] Thanks for the invitation. College life is full of ex-girlfriends! The campus beauty from the same freshman class? She's Chen Minggang's ex from their "amicable breakup"! The gentle, popular senior in the department? She's the ex-girlfriend who disappeared without even saying "goodbye"! Even the intellectually elegant professor? She was his stepmother's ex-girlfriend from his youth! Just when he thought he'd reached the limit of his life's challenges, his father announced, "Son, you've got a new sister. She'll live at home from now on. Get along well!" He opened the door and saw the girl reading with her legs crossed on the sofa. She looked up... Their eyes met, and the air froze! It was the all-around academic ex-girlfriend who looked at him like trash when they were dating. The most bizarre thing is, all these exes are ready to chase him back?! He's surrounded by exes at school, and at home, his exes have become his stepsisters... Can he still go to school?!