After Losing My Memory, How Did I Become the Yandere Girl's Late Husband?

After transmigrating to a world of swords and magic, and even landing the identity of a duke's second son, Ace thought he could enjoy a carefree life as a noble.

But then he ran into a “small” problem: he'd lost his memory.

“Senior, it's time to take your medicine~”

The moment he opened his eyes, a beautiful blonde girl who called herself his junior brought him a bowl of strange liquid. The bond between them seemed to go far beyond that of lovers.

Aha~ Now that's a nice surprise!

Ace believed her. Then he was done for.

There was no way this made sense! When Ace tried to run away, even threatening to kill himself, he discovered that things were far more outrageous than he'd imagined.

The blonde junior wanted him to stay by her side forever; the cat-eared Sword Saint wanted to kill him, and that was just the beginning!

His clingy childhood friend, a deranged blood demon, a short-tempered dragon girl... it seemed like countless women had fallen for him.

And Ace couldn't remember a single one of them!

Who are you people? I swear I don't know you!

Worse still, a mysterious black book told him that not one of these demonesses could be allowed to die.

If even one of them died, time would rewind to before it all began.

To escape the endless loop, Ace had to search for his lost memories while trying to soothe these corrupted girls.

But as the past gradually resurfaced, he suddenly realized...

It seemed they had all ended up like this because of the mess he'd made!

Ace: “So just how many love debts did I rack up back then?!”

The girls: “Not that many. A lifetime should be enough to repay them.”