Mob Character Reincarnated in Otome Game - Spin-off: Tears of the Iris

Razel is a young man reincarnated in an otome game, which is considered one of the best RPG games due to its difficulty and dangerous bosses.
After experiencing so many misfortunes and adventures, it was time to start a new page in his life to save the world.
The danger this time is to prevent a mysterious disease from invading the empire, so he will embark on a new adventure abroad.
But at the same time, a mysterious girl suffers a strange fate that only the villainess should have.
Who is she and how will her life affect Razel's destiny on this new journey?
New adventures begin in the spin-off of the popular web novel!

Main novel: https://www.webnovel.com/es/book/reincarnated-in-an-otome-game-as-a-background-character_20305865106218305