I’m Not Even an Otome Game Mob Character

Isaac, who had memories of his previous life in Japan, was the gardening apprentice of a duke’s family.
The duke’s house was the house of the rival of an Otome game played by his younger sister!
But he realized: he wasn’t even a mob character in the game.
There was no chance in being caught up with the rival and coming to ruin, either.

Does it matter that I have memories of my previous life?

That’s why he aimed to become a gardener without worrying about being in the world of an Otome game.