Treein

On their wedding anniversary, Mrs. Sato stepped out to buy some groceries, only to find herself transported forty years into the future.

Confused and still holding her groceries, Hana Sato was taken to a community service center, where she was picked up by her husband who had aged into an old man.

Jun Sato had lived as a widower for forty years, believing that his young wife had disappeared and likely died. He never expected her to return one day, her appearance unchanged.

"Ah, Sato Sensei, is this young lady your granddaughter?"

"No, she's my wife."

"Your... wife???"

And so, rumors spread among Sato Sensei's students that the gentle and kindly Sato Sensei had, at his advanced age, remarried a young wife, tarnishing his reputation for decency in his later years.

...
— Will you still love me when I'm no longer young and beautiful?

Transmigrated: Love Across Four Decades

<p>On the night when Hana was once again sharing a bed with her husband after a long separation, the older husband chuckled to himself for a long time, for reasons unknown. His laughter lessened the sadness in Hana's heart considerably, and in the end, she only felt like giving him a playful slapping.</p>

<p>The next morning, Jun was the first to awaken. The old man got up very early, blinked his eyes, and felt something pressing against his shoulder. Looking down, he saw a dark head of hair.</p>

Hana's Pregnant