Saitei na Ano Ko ni Sasagu Kono Fukushuu

Miori, who grew up in the countryside, has a childhood friend named Ayaka. Since they were little, Miori has been constantly bullied by Ayaka, but she can't defy Ayaka, who is the daughter of a prefectural assembly member... Time passes, and Miori, now 26, begins a life-changing revenge, using every means possible: taking over her in-laws' house, honey traps, and direct confrontations! (Source: Kodansha, translated)