At this point, it's just a willful story, wholly centered around power, and can be considered as a standard "tower exploration". I did rated this a whole lot higher(a whole 8 rating) when I started reading but as I continued, chapter after chapter, it felt cumbersome as the story is hardly of any notable features unique to it. With baggage from the future weighing on the main character's choice, you can easily see how there'll be plot armor after plot armor, non-stop, during their journey on returning to their peak. The dynamics between characters is of hardly any substance, like cogs from various machines meshed intoone and forced to work.

Such story is hardly worth cherishing, but at least it's enough to pass the time.