Reincarnation AU with emerald duo except Technoblade is the one reincarnated and Philza is still immortal, so they keep stumbling into each other. Philza can always tell it's Techno and Techno doesn't always remember but is always drawn to him.
Every time, they become warrior buddies and conquer villages, cities, and kingdoms together. Technoblade eventually passes as he always does, and so Phil waits..
and waits...
and.. nothing, not this time. Philza isn't winning wars, he's not pillaging or conquering, not without his best friend. And so he settles, this time instead of distruction he makes a life, a home, a family.
Until one day his oldest son brings home his new "brother", a boy around his age, a boy he claims is now his "twin", a boy whom Philza instantly recognised as the new reincarnation. Technoblade.
And he's nervous, nervous because he knows blood always follows.