The Frail Widower [Quick Transmigration]

The love interest is the most traditional omega in an ABO world. He has a perfectly matched husband and an adorable newborn child.

Then one day, they die in an accident.

The love interest begins to lose his grip on reality.

At that moment, a Family Affection System binds itself to him and sends him to different worlds to raise the protagonists while they're still children.

The love interest finds a reason to keep living.

Until the protagonists grow older and older, and less and less like children.

The love interest can no longer deceive himself. The protagonists aren't his children at all. He begins to distance himself from them and resent them.

But the protagonists, who have grown tall and strong at some point, force him into a relationship:

Where are you going?

Who are you looking at when you look at me?

Who are you treating me as a replacement for this time?

"You'll always be mine. Don't even think about leaving."

World One:

A fragile widower who has lost his husband is coveted by everyone.

But the most dangerous person is his adopted son, now an adult.

World Two: ...

A twisted pursuer × a broken, neurotic househusband

Not every world's protagonist is a pursuer. Some may simply be children, and their story will focus on family bonds.

The romance between the pursuer and the love interest only begins once the pursuer is an adult. Before that, it's all family affection.

Every world has a love rivalry, and the love interest gets a little crazy.

There is no legal or blood relationship whatsoever between the pursuer and the love interest.

No pregnancy. This is not a child-rearing story.

Theme: Finding the meaning of life