[Crossover/JOJO] Dio Doesn’t Want to Sunbathe

Also known as A Ghost's Wonderful Adventure and Reborn as the Useless Heroine of a Power Fantasy

Kibutsuji Hikaru is a female demon who has lived for several centuries. She's the same kind of creature as Kibutsuji Muzan.

In theory, she's Muzan's most successful creation. Though she hates sunlight, she isn't afraid of it. Though she isn't strong, she's practically immortal, and Muzan can't control her mind. I say "in theory" because in practice, she's an ambitionless slacker. After Muzan was gravely wounded by Tsugikuni Yoriichi, she escaped Japan and hid away for centuries, eventually becoming a reclusive shut-in with nothing to do.

But when she opens her eyes, she finds herself back several centuries in the past. The strange thing is, instead of holing up in China as she did centuries ago, her past self went to England and became George Joestar's second wife.

She thinks she's simply been transported into a manga, and that God has given her the script of a power fantasy heroine: beat up the villain, trample Dio, and protect the Joestar family. After working hard for years, she realizes things aren't quite as she imagined.

What's with that arrogant young nobleman wearing an eyepatch? And what's with that demon disguised in human skin, claiming to be an ordinary butler? And then there's the Grim Reaper...

Hikaru: At first, I thought that if I destroyed the Stone Mask, I'd be the one and only of my kind in the world. Later, I learned that I'm just an ordinary demon.

Dio's version:

Dio knows that many people call him a born villain. He admits it, but thinks he's done nothing wrong. If he'd retained even a little conscience, that scumbag of a father would have abused him to death, just as he abused Dio's mother. If he'd shown even a hint of kindness, those thugs in the slums would have bullied him.

If you don't scheme against others first, you'll always end up being schemed against.

He hates mediocrity, being looked down on, having to watch other people's moods, and those who can get everything without working for it.

Fame, money, status, a life above everyone else... Before he achieves them, he's willing to pay any price.

He knows he's no good person, so when he sees the guileless, painfully kind Joestar father and son, he despises them.

Why are such innocent people so lucky? He envies those who can live better than him without resorting to dirty tricks. It makes him feel as if all his efforts have turned him into a clown. If he could, he would make them suffer.

But what's with this woman?

She's arrogant, fake, and good at putting on an act.

He thinks they're alike. Yet she likes those so-called good people and does everything she can to protect them. As for him, she never hides her hostility, distrust, or coldness.

Why? He can understand those people looking down on him, but why does she, someone like him, get to do it?

They're both creatures of the night, so why is he willing to stay in the dark while she wants to chase the sun?

One day, he'll drag her into the darkness.

The male lead is definitely Dio. Making Dio the love interest inevitably means he'll be out of character. I know my writing isn't great, so there's no need to tell me if you drop the story (hugs).

A crossover of JoJo's Bizarre Adventure, Black Butler, and Demon Slayer.

Theme: Outliving the bad guys