Izu didn't really like Hiro's idea, it had him staying back with Rin and Hitomi for backup. That's not how he wanted to face Orochimaru, they both had odd jutsu that would make for a weird fight. He then heard Seth go on his rant about not getting anything assigned to him and he looked rather pissed. Normally Izu would have been stern with Seth, but he too didn't agree with the order of who would go in and face the rogue ninja. Rin then gave her suggestions on changing the order in how they would go into battle. It still had Izu hanging back to cover them, that was not his style so he decided to speak up.

"I will also voice my disagreement with this plan. I would like to take the front alongside Hayashi, let's keep Seth in the back with Hitomi for cover. My fighting style would work against Orochimaru since I can keep him at a distance and my Savage Slime techniques could help keep him off of us. Fighting him at close-range is extremely dangerous and not having a descent defense will be deadly" he spoke to them calmly. Izu then turned to Seth.

"You need to get this family nonsense out of your head if you're going to be a part of this mission. Acting like that will either get you or one of us killed. The mission should be your only concern and if one of us dies then do not lose focus otherwise we could all parish, do you understand?" he said to the leaf ninja sternly. It was harsh, but Izu had to do it otherwise Seth's rash and emotional behavior could endanger the whole mission and with so much at stake they couldn't afford to take chances like this.