The Fallen Princess's Struggle Begins with Meeting Hermione

After transmigrating into the body of a princess burdened with a grave crime, she thought she would never be able to leave her own territory, barring some unforeseen circumstance... That was what Vina believed. But the day-to-day life of a lord quickly lost its appeal, and Vina gave up trying, turning into a complete couch potato. Then one day, a “planeswalker” from another world appeared before her, and her mischievous spirit finally came back to life. This is a proper fantasy story about a lord building up her territory!!! Female protagonist! Female protagonist! Female protagonist! And now, for the joke version of the blurb. “Vina, why do we have to hold every meeting in a hot spring?” “Hermione, it’s called a hot spring meeting.” “...” “Vina, this is the castle of a demon lord.” “Nami, I believe you can steal the treasure inside!” “...” Hermione from the Harry Potter world became her chief administrator. Nami from the One Piece world became her finance minister. Orochimaru from Naruto and Senku Ishigami from Dr. Stone advanced the technology tree of the Land of Wind Chimes. Retsu Unohana, Esdeath, Artoria... Looking at the three newcomers before her, Vina smiled faintly and turned her gaze toward the far side of the sea... Tatakae!