Eroge Tensei Unmei ni Aragau Kane Buta Kizoku no Funtouki

After finishing a popular eroge game, a player wakes up reincarnated in its opening stage. He has become a noble character who opposes the hero and is destined to lose; every route involving him ends in death. Worse, he has already lost a duel, leaving him convinced that his fate is sealed. But he refuses to give up. Drawing on his knowledge of the game, which he mastered in his previous life, he fights to survive as an underdog in the world of the eroge.