After I Died, My Gentle Senior Sister Became Obsessive

【Two Female Leads, 1v1, all the conflicts in the blurb are misunderstandings.】 In Xia Shi's own words, she had either transmigrated or suffered a psychotic episode. Otherwise, why was she standing on the street with no memories? No matter how long she stood there trying to remember, she could only vaguely recall her name and the rules governing this world. With no money and no identity, Xia Shi had no choice but to scrape by outdoors for several miserable days. At last, she finally landed a job. Later, when she was being given a hard time at work and nearly got beaten, Xia Shi met a woman. The woman was cold on the outside but warmhearted, and not only sorted out the trouble for her, but also helped her rent a place and get an identity. Later still, Xia Shi realized that the woman was always looking past her, gazing at someone else. After thinking it over, Xia Shi paid her back and left without a word. … Many years earlier. Xia Shi finally managed to join an immortal sect. She had only average talent, mediocre social skills, and a family background that barely counted. At the disciple-selection ceremony, she was nothing more than a supporting character. Yet one woman specifically asked for Xia Shi to be her junior sister. Everyone was astonished. In all her years at the sect, the woman had never taken on a junior sister before. The senior sister appeared as cold as ice, but in private she couldn't have been kinder to Xia Shi. Xia Shi considered herself lucky. Even as she offered the woman her whole heart, she never forgot to work hard at her cultivation, vowing not to bring shame on her senior sister. Later, Xia Shi discovered that she was a top-grade cultivation furnace capable of purifying bloodline power. Perhaps that was why her senior sister had chosen her. Later still, Xia Shi died. During the immortal-cultivation period, the slightly dim puppy Xia Shi is the top; in the mortal world, the obsessive senior sister is the top. They switch roles often.