Unwillingly Reborn [Quick Transmigration]

001 was an original-generation System, with rudimentary functions and a chronic laziness problem. Its performance had stayed at zero for years.

Until one day, it received a notice from its superiors that it was to be decommissioned. The only way to avoid that was to help Hosts in four different worlds find happiness.

"So I just have to bind myself to four people, right?"

"Wait..."

And so, 001 bound itself to four Hosts who were about to die, and helped them be reborn, setting off down the road to finding love, with no turning back...

World One: An innocent little sweetheart (A Misaligned Romance)

001: A love triangle? Xun An, stop being stupid. Can't you see your seme is signaling you to take the bait? Hey, why are you inviting your love rival along again! (Note: Xun An is the seme.)

World Two: An Undifferentiated (Crowning the Ordinary ABO)

001: The shackles of convention are nothing but an excuse to run away. Ye Zhou, admit it: you're just an ordinary gay man, and so is he. Only you can make him happy.

World Three: A Gentle Madman (Crimson Dawn)

001: Chen Xi, I know you did it to save the world, but what do you mean, betraying the Federation? Wait, are you trying to overthrow the Federation's major general, too? He's hunting you down right now!

World Four: A Demon King (Echoes at Dusk)

001: Demon King, you're really good at playing dumb. You raised that hero yourself, and he likes you so much! Stop pretending you can't hear him!

When 001 completed its mission and prepared to enjoy the rest of its life, it discovered that everything had been a lie. The mysterious man who had accompanied it through all those worlds was trying to stir up a storm across the planes, and its final mission was about to begin...

World Five: System 001 (The Final Chapter of the Return)

001: "You did this on purpose to get back at me, didn't you? Do you know how many times I've died? Thousands? Tens of thousands?"

Xiao: "My love, you were destined to sacrifice yourself for me."

There are five different worlds, including modern, ABO, interstellar (Sentinel and Guide), and human-demon settings...

Note: Seme's point of view, 1v1, happy ending.

Theme: The next moment might bring happiness.