Call your friend back and do group summons and team instance. Strive to go for those "oh nom nom" ninja tools. I had a hard time in arena ranked too. 4 hours of battles and a net loss of -1 to my score. Had an even crappier matsuri (1 win against a low level). Well *f* it! I'm gonna stay away from those events for a while and come back if the situation improves.