Does charging actually do anything?

[Berf]

Dangerousbeans is right, you can perform a Charge action and end up in contact with more than one opponent's fighter (great with the Hadakauma, that's for sure ). As long as your fighter doesn't move further than 10 cm, you're allowed to come in contact with as many opponents as you wish, but you still choose one target for the Charge, which will be the one sustaining your 'charge attack'
Moreover, I'd like to emphasize the fact that, as you declare which opponent is the target of your Charge after you came in contact, charging two (or more) opponents is a very efficient way to get round certain pesky abilities, like the Dodge permanent ability (Yuri, Angela,etc.) or the Dissonant prayer permanent ability (Yeollw Komuso), which works only if the fighter is the target of the Charge action (I think this clarification is very important as these abilities do not use the word 'target' in their description).