Even without his usual access to his ki abilities, or his half-saiyan heritage in here, Trunks still had his combat instincts. He moved to support Kairi, also making his way towards the tree, with some ice-shards thrown at the mongeese. His 'sword' wasn't acting like a sword, but that was alright--it was still more than enough to parry and block vines.

"Got your back."