Is It Wrong to Seek Bonds in Another World?

Serious blurb: He is cherished by the rules, and yet he is also the first person to exist beyond them.

Because of this, he cannot find a world that can contain him. Forced to live in the rift between space and time, he is consumed by loneliness, staining his pure white soul with obsession.

He sits in a cage, coveting the world outside.

Not-so-serious blurb: After the Rules send Yu Ji's clones into various worlds, they begin their daily routine of spying on him. (The Rules: How can it be spying if I'm just checking in on my own kid?!)

The sinister assassin clan: Yu Ji smiles as he pierces someone's body.

The Rules: Aaaah! My kid! What's happened to you?!

The sinister Uchiha clan: Yu Ji blinks his starry eyes as he helps the battlefield rose hypnotize the world.

The Rules: Kid, how can you destroy the world?! You're going too far!

The Rules think it over carefully and decide to send their kid to a world with a good side next time.

The Demon Slayer Corps, with its century-old legacy: Yu Ji flashes a bloody smile. "Shine!"

The Rules: I'm numb to it all. My little kid has changed... (wears a weary smile)

The protagonist has a warped worldview in the early chapters and is the yandere type.

He'll become a little angel later on.

Theme: Why bother with romance? Isn't familial love better?