Samurai Warriors 2 (PS2): Oichi Tale Part 2
It is only recently that I discovered how her support special move works. In order for Oichi to give power-ups to her allies, she has to be very close to them. If so, then you will see 3 of the power-up item notifications onscreen (actually above their heads). They are random, though and You have no way of exploiting them for that very reason.
The power-ups are Life Up, Attack Up, and Speed Up.
If you use her Ally call move, she will summon a soldier near her. I find this one to not be that helpful but it can be in the right situations. The thing about enemy officers is that they approach other officers whenever you are within their range of view. They wont notice you otherwise.
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