Bleach

"Those who have no talent and make no effort, yet do nothing but complain and try to hold back those who are trying—close your eyes, shove yourself in a corner, open your mouth, and live off nothing but rain and dust." I don't know about talent, but let's at least put in the effort.

Here is Azuma Shohei, a Soul Reaper currently holding the position of the 15th Seat in the 2nd Division. Normally, Azuma Shohei is just an ordinary Soul Reaper harboring a one-sided crush on the Captain of the 2nd Division... However, as befits a true Soul Reaper, all sorts of incidents begin to unfold around him in the 2nd Division...

A thousand years ago, Yhwach was defeated by the Soul Reapers. Though he possessed omnipotence, that power was sealed away, and he was helplessly crushed by the Gotei 13. This is the “official history.” However, before his omnipotence was sealed, Yhwach happened to use his power—and came to a realization. That, for some reason, he would suffer a crushing defeat at the hands of the Gotei 13. And that, a full thousand years in the future, he would once again be defeated—this time by a boy named Ichigo.

If I have time to spare, I might as well do what I want.