Kanojo ga Koushaku-tei ni Itta Riyuu

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EP1 - Why Raeliana Made a Deal

After being pushed to her death by a mysterious figure, Hanasaki Rinko reincarnates in the world of a novel as Raeliana McMillan, a side character destined to be poisoned by her fiancé.

EP2 - Why Raeliana Made a Contract

Raeliana moves to the Wynknight mansion so she and Noah can be officially engaged. She used her knowledge of Noah's possession of the royal seal to convince him to make the deal with her, but Noah seems unfazed, making her wonder if he'll really accept.

EP3 - Why Raeliana Trained in Domestic Arts

Raeliana begins her bridal training at the Wynknight mansion. She and Noah must put on the perfect performance to convince society that their engagement is real, but the road ahead of them is clearly rocky...

EP4 - Why Raeliana Took Up the Fight

Noah and Raeliana attend a ball. Raeliana attempts to get closer to the wife of Marquess Eriteal at Noah's request, hoping to make him owe her a favor, but then another character from the novel appears: the antagonist Vivian.

EP5 - Why Raeliana Was Taken Away

Raeliana has been kidnapped, and a rescue by Noah and his knights is her only hope. But can they make it in time? And what kind of trap will they find waiting for them if they do?

EP6 - Why Raeliana Cosplayed

Raeliana wakes up in Noah's room, with Noah lying half-naked beside her. Panicked, she seeks Adam's help in fleeing the mansion. Noah sends out all his knights to find her, but Raeliana uses a maid disguise to avoid discovery.

EP7 - Why Raeliana Handed Her a Handkerchief

Raeliana attends the annual monster hunt in the Sycret Mountains, where each lady traditionally gives a handkerchief to her chosen participant, who in turn gives the lady a monster he's killed. On the first day, Noah makes a request of Raeliana...

EP8 - Why Raeliana's Going to the Temple

Noah and his retinue return from their hunt with a very surprising quarry in tow. Preparations for the lighting of the sacred flame begin, but His Holiness is distracted by other matters. Raeliana's letter to Beatrice finally gets a response.

EP9 - Why Raeliana Was Called a Barbarian

During a break in her purification period, Raeliana encounters His Holiness Heika, and their first meeting quickly devolves into an argument. But this only makes Heika more curious about the girl who spoke so impudently to him...

EP10 - Why Raeliana Called Him Grandpa

Heika tries everything he can think of to make Raeliana agree to be his disciple. He opens the seldom-opened gate to the Holy Land and summons its knights to show off his authority, and even tells Raeliana he'll be her grandpa.

EP11 - Why Raeliana Feigned Ignorance

A maid tells Raeliana about a mirror in the west building that promises to give visitors any information they want, and warns her not to go near it. But Raeliana is too curious about what could have happened to Beatrice, the novel's heroine...

EP12 - Why Raeliana Ended Up at the Duke’s Mansion

Raeliana continues to wonder what's become of Beatrice. When Raeliana visits a place Beatrice visited in the novel's plot, she meets someone completely unexpected instead, and learns that the status of the royal seal has changed.

SP0 - TVアニメ「彼女が公爵邸に行った理由」放送直前スペシャル

いよいよ放送開始となる異世界恋愛ミステリー、TVアニメ『彼女が公爵邸に行った理由』の魅力をノアボルステア・ウィンナイト役の梅原裕一郎さんと、キース・ウエスタンバーグ役の土岐隼一さんが、たっぷりお伝えする特別番組です。更に「彼女が公爵邸に行った理由」に因んだスペシャル企画にも二人が挑戦！果たして二人は「公爵」および「伯爵」役を務めるに相応しい見識を持っているのか…。どうぞお楽しみに。＜出演＞ / 梅原裕一郎（ノアボルステア・ウィンナイト 役）土岐隼一（キース・ウエスタンバーグ 役）