Since @Idk my user name never heard of the Disgaea Series, I have decided to explain the origins to him so here I go
Disgaea has very little advertisement. I discovered it by accident on YouTube. The game series has 5 main titles (the first game have three remakes, 2-4 have ports from the console version to the portable PSP/Vita) and 5 spin-offs. The series itself is made by Nippon Ichi Software (NIS for short). they have other titles but are just as obscure, they have American releases but again, it suffers from a lack of advertisement.
The games are SRPG, a type of tactical role playing game. Having an absurd level system where the level cap. is level 9999. Items equipped to the characters can also be leveled up in a similar manner. Best way I can best described the gameplay as this, it is a lot like chess but with added stems and miner changes. And trust me when I say there are crazy game mechanics, some of which are exclusive to a certain game.
The general story is this, Demons roam a world called, the Netherworld, ruled by the most powerful demon holding the title of, Overlord. The story focuses on a character that by the end of the game, becomes the new overlord of the netherworld they live in. All the while the protagonist is aided by friends and allies as he faces demons that oppose him, angels that hate demons, and at times humans with their own motives. Each game is a different story with a different set of main characters with little to no connection to the previous games. As well as having characters that you would not take seriously as well as a few secret unlockable characters that poke fun at certain genres. Best example is the Prism Rangers, a parody of Super Sentai/Power Rangers in general.
The first game was adapted into an anime, having both a sub and dub, but again lacked any real advertising. Having Laharl, the one destined to be the Overlord, being voiced by the actress for Rita Repulsa in the dub. the name of the anime is Makai Senki Disgaea, loosely following the first game's plot.
I hope you known explanation of the game @Idk my user name