If you liked Slayers or Dungeons and Dragons, you're sure to like this as well.
Plotline - Riui is a wannabe mage person, but he's more of a "I want to beat up everything with my fists!" type person. It just so happens that three other adventurers, which include Geenie the Warrior, Melissa the priest, and Mirelle the thief, are in town looking for a mage to join their party. With some unfortunate accidents and mishaps, the last mage they'd want in their party is Riui. Melissa decides to go worship her god in the sacred shrine in hope of a "Hero", and Riui accidently happens to appear at the wrong place at the wrong time. With no choice but to take Riui along with them, the four adventurers go fight evil!
I saw this just after finishing the entires Slayers Series / OVA / Movies, and it wasn't that bad at all. The first episode hooked me in pretty good, and it was pretty smooth from there. This is one of those under-rated series that nobody talks about, but it has it's awesome points. The series itself consists of action / comedy mostly, and there's not too much in depth plot. The main focus is on the characters, and they do a good job on that.
Riui doesn't really float my boat since he's your average idiot that wants to punch things and act before he thinks, but he's pretty comical when mixed with other characters. Mirelle is hilarious, definitly one of my favorite characters. The only thing that's really lacking is a solid plot, but who cares when you have awesome characters? Recommended to everybody.
My score - 8.5 / 10