[OP03-088_p3] - Fukurou (One Piece Promotion Cards: Winner Pack Vol. 6)

What happens if I choose my "OP03-088 Fukurou" as the Character to K.O. according to this [When Attacking] effect?

Your "OP03-088 Fukurou" will not be K.O.'d, and you will not be able to give 1 of your opponent's Characters −5 cost according to this [When Attacking] effect.