The Spirit Master Is Beyond Redemption

[Blurb]

The darkened Honmaru recently received a new master, supposedly a great demon king who once destroyed a world.

Sakurako Saiki: I've lost my memories. I only remember my name, and... that I want to die.

So whether you're a darkened sword or part of the Temporal Affairs Administration, please let her fall into a deep, peaceful sleep.

The darkened tsukumogami, having been hurt before, rejected all masters and even tripped Sakurako up both openly and behind her back. Their actions disturbed a deity who loved coffee jelly, and so the haunting tales of the Honmaru began.

Darkened tsukumogami: To be honest, every time I mouth off to the master during the day, I get beaten up that night!

The pairing is with the Boss Dazai.

[Blurb]

99 transmigrates. As the Alliance's strongest assassin, he was obsessed with imitating a certain strongest and escaped countless pursuits while carrying out missions. But in the end, wearing a blindfold and unable to see where he was going, he stepped off a building and fell to his death. His life was truly full of drama.

Even more dramatically, when he opened his eyes again, the first thing he saw was the object of his dreams, "Gojo"!

Except...

He looked at the dagger in the other man's head, then at the Inverted Spear of Heaven in his own hand. Something seemed just a tiny bit wrong.

Question: What should I do after I transmigrate into a certain tyrant and stab the strongest jujutsu sorcerer from the start?

P.S.:

1. The protagonist transmigrates into the tyrant, with two different faces.

2. Everyone survives.

3. The pairing is with the strongest, a crazy obsessive type.

Theme: Saving each other and embracing the light