Tamaki braces himself like Yuya is going to run at him and tackle him, not just throw a pillow at him. He waits, focusing all his energy on turning intangible, imagining the pillow sailing through is body harmlessly.

The pillow is thrown! It comes flying at Tamaki, and Tamaki tries to change into his "ghost form"-

-and the pillow hits his stomach with a soft pooft.

Tamaki stares at the pillow as it bounces off him and falls into the ground, frowning. Why didn't that work? He thought he felt himself turning intangible in the second the pillow hit him, but by then it had already collided.

"Weird... I can't turn until it's touching me."