闇堕ちラスボス令嬢の幼馴染に転生した。俺が死んだらバッドエンド確定なので最強になったけど、もう闇堕ち【ヤンデレ化】してませんか？

I, Arx Fort, is a reincarnated person.

Therefore, I knew that this world was the world of “Celestia Kingdom,” a popular otome game in my former world.

At first, I thought I was a nameless mob, but it turns out that I am actually a childhood friend of the most fearsome last boss

If the knowledge from my previous life is correct, won’t she fall into the darkness upon my death?

I managed to become the strongest and avoid a bad ending.

But something was wrong with her….

“Hey, why don’t you look at me…?”