【調査報告書】
●光月家に仕える五大名は天月家、雨月家、風月家、霜月家、黒炭家
●20年前の五大名には黒炭家と天月家はいない
●黒炭家はオロチのおじいちゃんがクーデターに失敗し、取り潰しになる
●天月家と黒炭家の代わりに霜月康イエとと光月おでんが大名になる

<Research Report>
- The five daimyo who serve the Kouzuki family are the Amatsuki family, the Uzuki family, the Fugetsu family, the Shimotsuki family, and the Kurozumi family.
- Twenty years ago, the five daimyos didn't have the Kurozumi family or the Amatsuki family.
- The black Kurozumi family is destroyed when Orochi's grandpa fails in a coup d'état
- Yasuie Shimotsuki and Oden Kozuki become daimyo instead of the Amatsuki family and the Kurozumi family.

【調査結果からの考察】
●黒炭家の土地であった白舞の大名には霜月康イエがなった
●天月家の土地であった九里は長らく無法地帯だった
●無法地帯であった九里を光月おでんが治めて大名になった

<Possible considerations from the research report>
- Yasuie Shimotsuki became the daimyo of the Hakumai that was the land of the Kurozumi family.
- Kuri, the land of the Amatsuki family, has long been a lawless area.
- Kouzuki Oden ruled the lawless area of ​​Kuri and became a feudal lord.