My Stepmother is from a Wealthy Family, and I Became the Beloved Little Brother of Four Sisters!

Brought into a wealthy family by my gorgeous stepmother, I now have four stunning sisters. Are they the daughters of the chaebol aunt, the third and fourth sisters or twins?! Her stepmother is the heiress to a top 100 company in the world and the "white moonlight" goddess in the top wealthy circle! I thought I was going to live the carefree life of a rich second-generation, but... Stepmother: Xiaoyun, our family is not short of money, what we lack is a good son! The eldest sister was cold and domineering: "Not enough pocket money again? Call me 'sister'!" The second sister was gentle and cunning: "Have you seen the black silk underwear I put outside?" The third sister was very clever: "Brother, come and be my model. This maid outfit is perfect for you!" Lin Yun:.............? The fourth sister was gentle and lovely: "Come here, sister will help you adjust your clothes. Stand still... Hmm? Why are you blushing?" I looked at the four stunning sisters in front of me and was completely stunned: Turns out being a second-generation rich kid also means facing a Shura field?! If the system had not been activated at that time, Lin Yun would have almost fled. Special sign-in task: Go to your stepmother's room to sign in and receive a skill lottery! • [Coquettish Challenge]: Act coquettishly to your elder sister for five minutes and see if she can hold it back! • [Companionship Mission]: Successfully get your second sister to stay with you for one night! • [Flower Protector]: When the third sister encounters an annoying suitor, stand up and protect her! • [Heartbeat Sensing]: Make the fourth sister’s heart beat faster and blush with shyness! When the sisters' favor value reaches 100...