Disgaea 3: Absence of Detention is more or less the same game as
Disgaea 3: Absence of Justice on the PS3, so if you've played it, be prepared for most of it to be the same. There are a few new things like new character abilities and a bit of a new storyline. Mao is a student of the Nether Institute of Evil Academy in the center of the Netherworld. He is there to learn how to be the best demon that he can be so that he can one day take over for the Overlord, his father. Mao is a bit of a rebel though. He has decided that he needs to become a hero (the opposite of a demon) as the hero always defeats the Overlord. Mao is determined to beat up the Overload. You might ask why, but I'm not going to tell you. I'll just let you laugh at the reason for yourself when you find out. The only problem is that he has no clue how to become a hero as the hero understand love and justice, which are the root of the hero's power, and Mao just can't wrap his head around those concepts. Geoffrey is his butler. Geoffrey gives Mao the "research data" on heroes (which is a lot of videogames and anime). Mao decides that to understand these concepts better, he needs to capture a hero to study and, of course, Geoffrey has one already lined up. Geoffrey gives him some "slaves" to use on his quest.
Raspberyl (Beryl for short) has issues with Mao wanting to be a hero. See, Beryl and her friends, Kyoko and Asuka, are "delinquents," which in this academy's terms means that she tries to do good and find peaceful solutions and she never misses class. If someone like Mao wants to be a hero, then Beryl is worried that he will give all delinquents like her a bad name. If you can't tell, bad is good and good is bad, and your normal way of thinking will be challenged. Beryl wants Mao to go back to being an Honor Student, not a hero! Just when Beryl enters, the hero Almaz von Almandine Adamant comes along as well. Beryl decides that it is her duty to protect the hero from Mao. Once Mao beats her, he captures the Hero and you are finally into the game. Mao steals the hero's title and makes poor Almaz into one of his demon slaves. Of course, Mao is going to learn that there are consequences to having the title of Hero and Almaz is going to learn that the title of Demon-in-Training is even worse for him than he thought! This is all just the beginning though. Mao and Almaz have a long way to go in the rather odd friendship. Even in the demon world, you can't trust that things are as they appear and Mao is going to learn a lot as he continues.
Mao is going to spend time in the school and also in dungeons. The school has plenty of places for you to shop for new items, visit the nurse to get healed, and go to your Homeroom. Homeroom is where you can work on your strategies. You can also create new characters here and call Homeroom to get bonus things, if you can get approval of the class representatives. You might have to bribe for your bonuses though! You will definitely want to use the "More Expensive Stuff" as soon as you can to get better weapons and armor in the shop. Make sure to look around for chests as they will appear in new places at the beginning of new chapters. You can also get chests in the dungeons from defeating monsters. Keep on battling Mao through to the end to find out who the real heroes and who the real demons are in this saga.