I've realised that selecting an enemy ninja as a target can be very difficult when they characters are darting back and forth on the screen and when one character is blocked by a much larger character (eg. Naruto in top row covered by crimson fist in the row below (same collumn).

Therefor I suggest that an option is added that allows us to set hotkeys for targeting the opponent's ninja. I'm thinking that the same nine keys (either the num-pad if present or a 3x3 area of letter-keys) can be used tree times, so ctrl + keys targets top, keys alone target middle, and shift + keys target bottom, or something along those lines.
This would make targeting easier and much faster. But if you add hotkeys, please allows us to adjust them to our liking :)