After Reincarnating as a Red Maple, I Split in Two

One is a lazy-to-the-point-of-death former idiot boy who reincarnated as a red maple seed.

The other is a former red maple seed, now a girl who has lost her identity and been shut out by the world's System.

Now the boy has stolen the girl's fate and is being relentlessly pursued by seven hundred and eighty-something (totally made-up) beautiful girls (and turned into a girl himself).

Now the girl has inherited the will of the ancient gods and seeks to erase the world that has brought her nothing but pain (and turned into a guy herself).

Will peaceful, carefree days last forever, or will this cruel world be reborn? I ran out of space, so I'll stop making things up here.