Twin Rushdown Bonk Sound Plays with no Target
When Twin Rushdown is used on a target Unit that would die from Fuwawa, Mococo is summoned and despite there being no target to attack, it still makes the Bonk noise a second time. I can only assume it is somehow acting as if it is attacking the dead Unit, but it doesn't actually use up the Attack for Mococo so it doesn't disturb gameplay at least.