Paran Majang Diary

A woman named Saeju is approached by a cat, possibly a prince, who offers to fulfill any wish in exchange for her becoming his wife. Seeking revenge, especially after being rejected by someone she has long admired, she considers the offer. However, accepting help from an otherworldly being leads to unexpected consequences. Saeju soon discovers that the unusual cat transforms into an unwelcome new "brother" in her life.