Upon publication, the title has been partially changed.

Former title: `Eroge Reincarnation ~An Underdog's Struggle Against Destiny~`

After clearing an eroge acclaimed as a masterpiece in certain circles, I went to sleep, only to wake up reincarnated into that very eroge I had just finished. What's more, I'm the minor character who challenges the protagonist to a duel in the early stages, only to be defeated. Furthermore, my death is a certainty in every heroine's route.

Although I've reincarnated as such a 'set-up' character, the situation is even worse: I've already lost the duel. Escape from death is no longer an option. But I mustn't give up! I possess the knowledge from having cleared this eroge in my past life. I'll make full use of that knowledge to survive!

This is the story of a protagonist who reincarnated as an eroge's 'set-up' character and desperately fights against fate to survive.