User blog comment:BurnZ/Monster Hunter - Dual Swords or Long Sword in MHP3 or MH3?/@comment-168.184.220.4-20110210171638

To add to the LS spirit mode, if you start the spirit combo and the last swing hits, the sprit bar will get a white outline, fill the bar again and do a sprit combo and the last hit of the combo hits, it turns yellow, do it again and it turns red. Also, the LS will get an aura of some sort, I think it makes the sword attacks stronger.