Can an RPG Player Raise a Godfather-in-the-Making?

The player has no name. The player is simply the player.

Just as he was about to finish Final Fantasy VII Remake, he transmigrated to Japan in the late 1980s, along with his game interface.

The player, temporarily living in Japan and working to make ends meet, unexpectedly discovered that everyone around him came from a single-parent household.

The single mother living nearby was raising a fox spirit from the demon world. The woman in the apartment next door was raising the future Godfather, who had a Stand. The delinquent girl he met at the convenience store where he worked was raising a descendant of the demon race, a Demon King from generations past.

After searching in vain for the main story quest for half a year, the player finally realized: Could I have transmigrated into a raising game?!

But just as he was halfway through raising his kids, all sorts of strange opponents came looking for him.

"I want to see who dares steal my son, DIO!"

"Seven hundred years have passed. We welcome the young master of the demon world back to his rightful place!"

"Kurama, you still owe me a pair of eyes."

Only belatedly did the player realize that the kids he'd been raising weren't really kids at all!

Kurama gave an awkward but polite smile. "I was reincarnated."

The reborn blond Godfather said, "I hinted at it ages ago, but you just didn't get it."

A crossover with JoJo's Bizarre Adventure, Yu Yu Hakusho, Saint Seiya, Shaman King, Demon Slayer, and many more.

The protagonist will have many different game systems, including FF7, the Alchemist series, and the God of War series.

The crossover lineup should make it clear: this is a self-indulgent, nostalgia-filled, old-school power fantasy, with a chaotic timeline, no outline, and possibly no logic, just tons of golden fingers and unabashed enthusiasm for the source material.

Theme: Love your kids, love life.