After I Transmigrated into a Book, I Became the Big Shot's Only Disciple

【A one-on-one romance, maybe~ A powerful team-up】How do you survive after transmigrating to a world of immortal cultivation!? Why has my once good-for-nothing master suddenly become so powerful? Is she pretending to be weak while secretly holding all the cards just so she can rule the three realms? Why has the senior brother who always ignored Jing Tantan suddenly changed his whole demeanor? Wait, you're supposed to belong to the heroine! Don't come over here!!! I picked up a homeless little fox while traveling down the mountain. What do I do when it's so haughty~ Just rub its ears and tail, and it'll behave! Fussy “villainess” × master pretending to be weak while secretly holding all the cards Pure-love-obsessed junior sister × tsundere senior brother Any resemblance is purely coincidental!