If you want an 'annoying' game, try Daibanchou -- Big Bang Age. OMFG! 
Big Bang Age is hard the first time you play. As in, if you're not prepared, you'll get fucked in the ass.
The best thing you can do is stock up on schoolgirls in the first two parts. Though... overstock and you have money problems at the beginning of part 3.
Also...
http://alicesoft.wikia.com/wiki/Big_Bang_Age:Character_walkthroughBest thing ever.
If you want a suggestion to completely wreck normal mode, here's you should get in part one and two:
For battle:
Burai - boxer guy (His special skill, when activated, sets his evasion to 999. He has high hp and attack. Always useful)
Kendo - Kendo girl (She gets two powerups if you do things right. Her dodge never improves, but her attack ends up almost as much as Rouga's by the end of part 3)
Heita - Starting character (Super heita makes the final dungeon easy as all hell. His evasion ends up being about 60, and he gets 30 more against demons, so practically nothing hits him. Even if he is hit, he has enough health and counter that it doesn't matter)
Kunagi (Her evasion makes the game funny at times, but you only have her in her path)
Ijuin Tamari - Lolicon teacher (Scout lets you see enemy actions when he's in battle all the time instead of just every other battle. Very useful support character)
Nanana - Softball girl (Her attack and health end up very high, though her hit and evasion lag. Her skill sucks, but if you clear her, it turns into an attack boost for all allies in the fight with her. Useful for absorbing and dealing a lot of damage)
Kyouko - Mother (Insanely useful along with her daughter, Yuuna, for lowering the counter of enemies. This makes long-range characters very powerful, as enemies can't ordinarily fight back)
For management:
Aya (Low pay, high income, decent law)
Jun (High law)
Hibiki (Good law and income)
Gou (High law and income)
In part 3, however, there are many, many characters. The ones that really stand out are:
Kuga
Shion/Sion
Shizuri
Akuu
Daimao
Spam
Kanata
Mouri
Mouri
Misugi (For his BP boosts, get rid of him after you get them)
Saito (Great evasion later on)
These characters are easy to get (Except maybe Kanata, Mouri, Daimao, and Mouri, if you aren't careful and quick), and they're all pretty useful. Some other ones are difficult to recruit, like the space emperor, so I didn't include them.
(Spam is a douche)