I Reincarnated as the Childhood Friend of the Final Boss Villainess Who Falls into Darkness. If I Die, It's a Guaranteed Bad End, so I Became the Strongest, but Hasn't She Already Fallen into Darkness (and Turned Yandere)?

I Reincarnated as the Childhood Friend of the Final Boss Villainess Who Falls into Darkness. If I Die, It's a Guaranteed Bad End, so I Became the Strongest, but Hasn't She Already Fallen into Darkness (and Turned Yandere)? cover

“If you were to disappear… I might just lose myself.” Arcs is reborn into the world of the wildly popular otome game Celestia Kingdom. He thought he was just a background character—until it's revealed he's actually the childhood friend of the final boss! Determined to avoid the bad ending, he throws himself into his daily life as her servant. But it seems the true cause of her descent into darkness is… her childhood friend!?

15 chapters

I Reincarnated as the Childhood Friend of the Final Boss Villainess Who Falls into Darkness. If I Die, It's a Guaranteed Bad End, so I Became the Strongest, but Hasn't She Already Fallen into Darkness (and Turned Yandere)?

I Reincarnated as the Childhood Friend of the Final Boss Villainess Who Falls into Darkness. If I Die, It's a Guaranteed Bad End, so I Became the Strongest, but Hasn't She Already Fallen into Darkness (and Turned Yandere)? is an ongoing manga by Oomiyabi, first published in 2025. It blends action, romance, isekai and fantasy. You can read all 15 available chapters of I Reincarnated as the Childhood Friend of the Final Boss Villainess Who Falls into Darkness. If I Die, It's a Guaranteed Bad End, so I Became the Strongest, but Hasn't She Already Fallen into Darkness (and Turned Yandere)? online for free on MangaPulse; the newest is Chapter 15, added 2026-10-03. New chapters appear here shortly after they're released.

Oomiyabi · 2025 · Ongoing

Action · Romance · Isekai · Fantasy