Yes, the Beastars manga has come to an end. It left fans with a memorable and impactful conclusion that tied up the various storylines and character developments.
Well, it could make his combat style more versatile. He might be able to analyze his opponents' moves more precisely. With six eyes, he could have a wider field of vision, detecting attacks from more angles. Maybe he can use this new visual ability to anticipate his enemies' actions better and counter them with more effective jutsu combinations.