Three Sentences to Help You Usurp the Mafia Boss

Funny version:

Tenba Ritsu, bound to the Imperial Succession System: The succession struggle? The Crown Prince? I'm familiar with this job. I've got this!

Tenba Ritsu, discovering that she only has two rivals: Three choices, and this is a succession struggle? This is free points!

Tenba Ritsu, seeing the two overpowered* rivals: You didn't say I had to fight two bugs! I'm out! (turns and walks away)

Serious version:

On the very first day after transmigrating, Tenba Ritsu got her golden finger.

But... isn't something a little off?

Tenba Ritsu: Are you sure you haven't ended up in the wrong story?

The System firmly insisted it hadn't.

Tenba Ritsu: But you're an Imperial Succession System, and this is Yokohama. The setting doesn't match, darling. And are you sure you haven't bound yourself to the wrong person?

The System fell silent for a while, then firmly insisted again that it hadn't.

Tenba Ritsu looked at her rivals:

In literature, there was Brother Dazai, with eight hundred tricks up his sleeve. In combat, there was little brother Nakahara, with record-breaking destructive power.

And then there was her, so thoroughly ordinary.

Tenba Ritsu: What made you think I could win?

System: You're a professional heir.

Tenba Ritsu thought about who she'd been before transmigrating. It seemed that was true.

One strike.

System: Your ability is very suitable.

Tenba Ritsu: What's my ability?

System: ...My territory.

Tenba Ritsu answered at once: I don't know how to use it.

System: ...Take a look at me.

Tenba Ritsu looked up. Cards appeared above her: [Xuanwu Gate], [Changing the Cat for a Prince], [Boiling Beans to Burn Their Stalks], and others that had yet to solidify. She got it.

Two strikes.

System: Your Imperial Father likes you.

Thinking of her boss, who shared her principles, had the bearing of a mentor, approved of her and taught her, and honed her like a diamond, Tenba Ritsu said confidently: Of course he does!!!

He was her revelation!

At least, that's what she thought until they fell out.

Three strikes.

The System nodded, satisfied: I believe you'll become an excellent Crown Prince.

The System was horrified: Wait, what are you doing??????

The System screamed: I told you to fight for the throne, not usurp it!!!

This story is a crossover, with three different flavors and three different styles. There's sure to be one you'll enjoy~

Three Sentences to Help You Conquer Yokohama's Love Triangle, by Tuntun Ai Chi Tang

Three Sentences to Help You Become Yokohama's Richest, by Fei Guang Du Zhou

Core theme: Love, the world, and peace.