My sister asked me to give up my fiancée to the most powerful dragon who likes me and unexpectedly takes over my kingdom? (Volumes 1-9 the latest volume)

Publisher: KADOKAWA/Enterbrain
Author：hi8mugi,Kashiwa Ten,COMTA
Size: 128mm x 182mm
number of books：9
Language: Japanese
Category: Women's Manga,Cartoon
the latest volumeRelease Date: 2024-05-31

Synopsis:
Just as Eliana, a duchess, has won the position of the Dauphin's fiancée through her diligent efforts, her sister's selfishness causes the engagement to be called off.
Heartbroken, she runs for the "Dragon Bride" and throws herself into the boiling magma as a sacrifice of honor, only to find herself lying in a crater, covered in drool. ......?
I'm going to marry you according to that tradition!" The turbulent life of Greed, the dragon of greed who corrupts everything he touches, and Eliana, the naive, super-lady Eliana, begins! The curtain opens on their tumultuous life as master and servant (?)!