[Harry Potter Fanfiction] Lifelong Friends

In their previous lives, after the war, Harry and Ron each started a family with Hermione and Ginny, and lived to be a hundred.

In the eyes of outsiders, they were Harry Potter, The Chosen One, former Auror Captain, and headmaster of Hogwarts School of Witchcraft and Wizardry, and Ron Weasley, legendary hero and the longest-serving Auror Captain in history. They were lifelong friends and the best of brothers.

However, only they knew that a Potions accident more than half a century earlier had led them to share an intimate relationship for a whole month.

After recovering from the potion's effects, they both independently chose to forget the matter so as not to hurt the people they loved. After all, they each had a family, and knowing each other so well, they both secretly believed that what happened had been an accident and that keeping their distance was the greatest respect they could show one another.

By the time they were a hundred, their loved ones had all passed away. The two centenarians, who had guarded the boundaries of friendship for their entire lives, independently chose to stay together until the end...

But when they woke again, they discovered that they had returned to age fourteen, back at Hogwarts in their fourth year. The difference was that this was an ABO world: Harry had already presented as an Alpha, while Ron was at the age when he could present as an Omega...

In this brand-new world, where will two people who were already secretly in love with each other go from here?

Theme: Everyone has a duty to build up rare pairs.