Starting with Sharingan, starting with Demon Slayer, infinite death

[The infinite suicide system has been bound! ]
System: Boy, you are a ghost!
Kanhara Tetsuya: Then what?
System: Join the Demon Slayer Corps!
Kanhara Tetsuya: …
[The suicide mission has been released! ]
[As an evil ghost, join the Demon Slayer Corps and hide your identity. The higher your status in the Demon Slayer Corps, the more rewards you will get! ]
[Confess to the scum boss (Muzan) that you are a ghost hunter. If you are not killed, you will receive a generous reward! ]
[Tell Togashi Giyu that he is hated! ]
[Tell Kanroji Mitsuri that she will never find a lover in her life. ]
[Mocking Kokushibo will never be as good as Tsugikoku Yoriichi! ]
…
Kanhara Tetsuya: Just play me to death!
This book is also known as “I Became a Pillar as a Ghost”, “The Most Loyal Traitor to the Scum Boss”, and “This Ghost is Obviously Very Strong But Too Suicidal”.