Forum:Life Stream Dragon vs Bad reaction to simochi

hey here's the thing: Opponent has Power Tool Dragon and Morphtronic lighton on the field and 200 LP, Player has Justice Bringer on the field with Bad Reaction to Simochi and mirror Force face down. If the opponent synchro summon Life Stream Dragon and make his LP 4000 can i active Bad Reaction to Simochi in response to the effect to burn his LP?