Don't try to collect pupils to more than one Brute. One Brute should be the "master" who collects pupils, so bonus xp goes only to that one. If you have more than one master then the bonus xp will be diluted.
I'd recommend making as many characters as you want, exhaust all of their fight opportunities, and then choose the one with the best weapons and specialties to be your "master" Brute. Then, start advertising that one on random internet forums and collect pupils.
Also, if you want a tough fight, then go to the area's search function and type in "k-sasaki". He's got low stats, but he's got the super-rare Panther animal (i've only seen one other brute with the panther while surfing replays, but i haven't actually run into another panther yet). That alone has allowed him to be totally undefeated, even though he's been picked on by other players because of those low stats.
I'd recommend making as many characters as you want, exhaust all of their fight opportunities, and then choose the one with the best weapons and specialties to be your "master" Brute. Then, start advertising that one on random internet forums and collect pupils.
Also, if you want a tough fight, then go to the area's search function and type in "k-sasaki". He's got low stats, but he's got the super-rare Panther animal (i've only seen one other brute with the panther while surfing replays, but i haven't actually run into another panther yet). That alone has allowed him to be totally undefeated, even though he's been picked on by other players because of those low stats.

