This seems to be a light hearted isekai but I hope there's some trouble happening within the nobles after her banishment. A daughter of a Ducal house, willy-nilly exiled by a prince without proper investigation is scandalous. As much as the nobles of duke is below the royal family, they can't be simply touched by the royals, there a shite tons of lower nobles backing the duke, there are counts, barons, and those are usually A LOT. It also looks like all those 'evidence' that the prince is saying are nothing more that "she-said-he-said", like, umm "oh, crown princess bullied her, exile her!" Throwing out a duke's daughter will topple the power balance of other country since other nobles from other nation can also ask for her hand and a duke households are frikkin rich (she's the ONLY DAUGHTER, their family could transfer their riches somewhere far coz of grudge against royal fam).
I'm not even gonna mention how a LADY of a noble household is always accompanied by a hand-maid and such lol. she didn't even get accompanied by a carriage when leaving wtf
I like that the main couple are already established in their relationship (both are mature as well, FL is not brain-dead with love). I dislike unnecessary drama like, the guy or girl being unsure about who they really like and such (no more love triangle shyt). What I like about this is that both main characters are sure that they love each other and no prolonged chapters or arc before they get together.
Mr 45 years old beast
Sesame salt and pudding
Kitsune spirit
Furare girl
Sono bisque doll wa koi wo suru
Do Chokkyu Kareshi × Kanojo
Gokushufudou: The Way of the House Husband
Ojiichan shinanai
Saotome-Senshu, Hitakakusu
Hayaku Shitai Futari
Ichaicha Shiyou yo, Kumakei Kareshi kun
Some might not exactly be what you're looking for but hope you like it
I love that he's very disturbed about the lipstick and our baby Uke straightforwardly told him about it wahaahaha