Sand Sea: Desert? Only a Fool Would Go!

(There is system + cp to be determined) I am Ji Min, a man who appears throughout the text, and also Ji Shu's brother. I was captured and sent to another world for two and a half years of role-playing training because of my poor escape skills. I am trying to find a way to meet my sister. I am Ji Shu, a girl who lost her parents since childhood and spent her dangerous teenage years under the protection of her brother. However, I lost all information about him when I was in high school. The only clue was a bank card he left behind. I will not give up on finding him and taking him home. I am Wu Xie, a righteous man who is committed to fighting against the dastardly stalker family, and a good citizen who focuses on bringing the elderly home. However, due to too many variables, I entered the stage that had been set up early.