Hashirama's Initiative is way more higher than the usual setup of the game, and that is only for the Ninja Exam, as you can see, he's at the last position but do standards and mystery first before the other in first and other positions .. So you have Sage Naruto and Regular Gaara which i assume have chase immobile breakthrough .. Why don't you try using .. Lightning Main with Sage Naruto, Gaara and Bee .. 3-2-3-1-2 Kirin or Kyukusho Deer Summon ..

Gaara - X - X

LightningMain - SageNaruto - X

Bee - X - X

Round 1 - Use Bee on Naruto then use Main's Mystery Skill, after gaining 20 chakra from Sage Naruto, wait for Gaara to make his standard attack and use his Barrier Skill.

Round 2 - Edo Tensei Hashirama will launch his Wooden Buddha Skill and will interrupt your Gaara, while the animation is showing, use Sage Naruto skill to Naruto Nine Tails Chakra to interrupt his Tornado Rasengan.

Round 3 and the next rounds, it's gonna kill all other ninjas, expect your Bee to die but its okay .. The main ninjas that must be alive on your team are your Main and Sage Naruto .. Last enemy will left is Edo Hashirama, and blitz your way to kill him ..

..It's not bugged