After the Breakup, the School Beauty Sister Brought the Spirited Girl to the House

After a breakup, the neighbor's sister whom she hadn't seen for three years has grown into a school belle and brought along three spirited little girls. A man with yellow hair and a hot figure was wearing a loose white T-shirt, revealing his fair and smooth shoulders. After entering the room, he sat on the sofa, picked up the beer on the table and drank. A tall man with green hair took off his colorful coat and went straight to the bathroom to take a shower. Li Mu was a little confused. Who are the people brought by the school beauty sister?