Broken! My Sister Found Out That I Was Living with Her Best Friend

Gu Ci, who had just been admitted to Jiangnan University, was dragged to a party by his domineering sister before school started. When I woke up from a hangover, I found a stunning beauty lying next to me. What's even more terrible is that the other party is not only my sister's best friend for many years, but also the youngest female professor at Jiang University and the most intimidating to all the boys in the school, Pei Yushu! In order to save their lives and preserve Professor Pei's aloof persona, the two were forced to sign a confidentiality agreement and began an outrageous underground cohabitation life. I thought that being with a king is like being with a tiger, but after living together, Gu Ci was shocked to discover... The aloof mentor who wields the power of life and death on the podium is actually a serious loser in private? Not only cook and fry the kitchen, but also stay at home and play games every day "Gu Ci, I'm hungry. I want to eat the sweet and sour pork ribs you made~" Gu Ci became numb when he saw the female instructor holding her arms and acting coquettishly. Until one day, my sister suddenly came to check on the post. She fell into a dead silence when she saw her best friend walking out of his brother's bedroom wearing a men's shirt... Gu Ci: "Sister, listen to my explanation, she is really just tutoring me in advanced mathematics!"