That Tidus intervenes is a help because Senku had been feeling helpless in that moment. He couldn't fight Roland, not really. He knew that, and yet when he's released Roland might have backed off, but not nearly as much as Senku did, putting space between them.

He felt...no it didn't matter. He had the urge to squirm out of his skin which he hated, but he squashed it down. A long, slow, deep breath as he compartmentalized. "You have my attention." Senku was just going to ignore it for now, but his tone is a bit more deadpan as though he didn't lose his temper or he didn't feel upset or overwhelmed. He was hiding behind his facade of calm, rational person.

"There's no point in that." Senku responded evenly, outwardly calm no matter how chaotic he felt. "It's broken."