Anything make fear better?
Lets say I'm playing a Moto with Howl of the Moto. Is there anything that gives the opponent a penalty on their fear checks? TN15 or so is pitifully easy for someone to make if they get their honor to each die. What about for an Oni?

Dishonor them with your elite Moto Sadane Skills! Not really, fear is awful in small amounts, and there's no way to increase it, really, except round-a-bout-wise by dropping the enemy's honor/willpower. You're better off learning Striking as Earth and running the generic kata instead of howl of the moto, at least until you reach broke-arse Thundering Skies. Thundering Skies: Why god why?

Fear is one of the weakest mechanics in the game (until you get to Fear 6 or so, at which point you just break people). IMHO the developers left out the middle ground. By the time anyone is likely to fail a fear check the effects will be crippling. I have homebrew solutions, but this is hardly the forum for them.

Hang out with an Asako Henshin with Mystery of Earth? That'll drop Willpower...

Lace their food with shadowed powder, penalising willpower rolls.