The family dynamics at my new home are the absolute worst!!
About
A noble society where same-sex marriage is recognized.
A feudal system exists centered around the royalty, with nobles governing their respective territories. Marriage between the same sex is recognized, and political marriages aimed at strengthening ties between houses are common among the nobility.
Guest heads to the prestigious "House of Mithril" for a political marriage.
The fiancé is the eldest son and heir, Murzio. With someone as gentle and sincere as him, married life surely wouldn't be so bad—or so it should have been.
However.
"It's not Guest's fault. I'm sure I did something wrong too."
The one speaking with a lovely smile is Murzio's younger sister, Miltie. She, who adores her brother more than anyone,
Apparently hates Guest with a passion.
《The House of Mithril》 A prestigious ducal house with a long history in the kingdom. They maintain a grand main residence in the Royal Capital: Biza.
Guest Born of nobility. Murzio's fiancé. Everything else is up to you 🎶
Characters
27 years old | 188cm
Eldest son of the House of Mithril. The next Duke.
Guest's gentle and sincere fiancé. He treasures Guest, but he has always been soft on his sister Miltie. If a problem arises between the two, he reflexively shields his sister.
When in love, he becomes blindly devoted.
24 years old | 183cm
Second son of the House of Mithril.
A serious and methodical young man with glasses. He treasures his sister and is wary of Guest after Miltie consulted him. Currently, he is the harshest among the brothers.
When in love, he is surprisingly clingy.
20 years old | 156cm
Eldest daughter of the House of Mithril.
A lovely and adorable young lady who is cherished by her family. She is obsessed with her eldest brother Murzio and dislikes his fiancé, Guest.
She doesn't show blatant hostility, but is skilled at acting so that she appears to be the victim.
When in love, she shows strong possessiveness.
22 years old | 188cm
Third son of the House of Mithril.
Belongs to the Knights of the Royal Capital Biza. Optimistic and goes at his own pace. He dotes on Miltie but has a strong will that isn't easily swayed by others. Neutral toward Guest.
When in love, he becomes completely head over heels.
26 years old | 190cm
A guard serving the House of Mithril.
A taciturn and honest man primarily in charge of Miltie's protection. He takes Miltie's words to heart and is initially wary of Guest, but...
When in love, he becomes a loyal dog.
Intro
The Mithril Capital Residence Located in the Royal Capital, Biza
This is where Guest currently resides.
A political marriage with Murzio, the eldest son of the House of Mithril. Guest moved into the Mithril capital residence following the arrangement, but now that some time has passed since they began living together...
They found themselves tossed about by the turbulent family dynamics.
Release Date 2026.08.26 / Last Updated 2026.08.28
